Contents



ContentsNote: This is a work in progress (Uploaded: 2018-04-05). Check for updates).IntroductionCapabilitiesFiles Needed and InstallationVersion ChangesGeneral Operating ProceduresTutorialsScreen InformationScreen ScaleSlide ShowMouse OperationsSelecting StructuresKeystrokesStarting a New DrawingMultipage DrawingsFramesUndo/RedoFrequently Asked QuestionsAdjustable ParametersDrawing LinesDrawing LinesAlt-BondsDouble BondsTriple BondsRingsCurvesLabelling, Text and OrbitalsAdding TextFormatting TextLabel FormattingLabel Position Search and ReplaceSpecial CharactersEditing the DrawingUndoMoving Points and Labels Editing LinesEditing LabelsSearch and ReplaceModify - Copy, Cut, RotatePrinting and ExportingPositioning a Drawing on the PageExporting Files, HTMLFile OperationsSaving PLT FilesOpening PLT FilesExporting Files, HTMLFile LocationFile ViewINI filePLT File StructureTemplatesThe Template DatabaseEditing the Template DataBaseEditing TEM FilesScales and the X Y Graph RoutineScalesX Y GraphSimulationsNMR Spectra Tracing NMR SpectraImporting Images in PLTCapabilitiesBelow a WMF of a one-page PLT drawing that illustrates some of the capabilities: WINPLT is a program for the production of high quality chemical structure drawings with IBM-compatible computers using a Windows operating system. Drawings can be edited easily with no restrictions. PLT Drawings can be printed on the currently selected Windows printer or other output device. Exporting: Windows metafiles (WMF or EMF) can be produced for incorporation into word processing and other graphics programs. The drawings included in this WINHELP file are Windows Metafiles produced with WinPLT (e.g., Bisect??) GIF, BMP and JPG files of PLT drawings can be produced, for addition of graphics material to WEB sites, or for incorporation into other programs. Encapsulated PostScript (EPS) files can be produced for transfer of high quality graphics images to other devices. HTML files of PLT drawings can be produced for presentation of information on the web. Drawings and text can be produced with exact dimensions, specified in mm. Line thickness can be varied. Text material can be produced in various fonts, colors, sizes or styles (bold, italic, underline, superscript, subscript). Multiline text material will automatically word-wrap according to Line Length Parameter and Line Spacing Parameter settings. Bitmaps images (JPEG, BMP or GIF) or metafiles (WMF, EMF) can be inserted into PLT drawings. Simple X Y Graphs can be produced easily as an integral part of a PLT drawing. The graph routine will also produce least squares lines and plots of functions (y = f(x), where f(x) can be defined by the user). NMR spectra in the Lybrics or NUTS format can be incorporated into PLT drawings. Scanned NMR spectra (BMP or GIF format) can be converted to vector format ("traced") and incorporated into PLT drawings. NMR spectra can be arbitrarily scaled, integrated, peak-picked and Section expansion can be prepared. A single drawing can thus include graphics material (chemical drawings), atom labels, paragraphs of text, X Y graphs, NMR spectra and bitmap images. PLT can be used to present Slide Shows (a la Power Point) using multipage PLT drawings.Introduction PLT is Free Shareware. We ask you to register by sending an e-mail to reich@chem.wisc.edu. For download instructions see the PLT web site at: Needed and InstallationMissing FeaturesKnown BugsVersion Changes and Correction to ManualFile CompatibilityGeneral Operating ProceduresScreen InformationViewScreen ScaleMouse Operations Keystrokes in MAIN, ModifyStarting a New DrawingMultipage DrawingsWindows and PLT ClipBoardsDockingSlide ShowMaking Web PagesMenus ??Adjustable ParametersUndoFiles Needed and InstallationThe following files are needed to run WINPLT version 7.1. First PLT itself:PLT71.EXE CodePLT71.DAT Default values of parameters, other data used internallyPLT71.INI (Not essential on startup) Custom configuration informationPLT71.HLP The help fileThe programs below are required and should be in the WINDOWS\SYSTEM folderCimage.dllFreeImage.dllGrid32.dllCOMDLG32.OCXThe files below are also needed, but should already be in the WINDOWS\SYSTEM or WINDOWS\SysWOW64 Cat.dllCtl3d32.dllMFC40.dllMSVBVM60.dllMSVCRT40.dllOleAut32.dllOlePro32.dllStdOle2.tlbFor Windows versions before Windows 7:The setup program (PLT71SET.EXE) will install all of the necessary files, and create a WIN71PLT folder (or another name you choose) for the executable and support files, and PLTTEM subfolder for the template files. It will also create a program group with three icons: the executable, the HLP file, and an Uninstall icon. If you wish to uninstall PLT, simply click on the Uninstall icon and follow the prompts. Note that an uninstall operation can remove files needed by another program that was installed later than PLT was.For Windows 7 and later:Microsoft decided to no longer support traditional setup programs so the files above have to be manually installed. See instructions on the PLT web page: After you have installed PLT, make any changes desired in the various Options Menu items and save these to the INI file.Screen InformationTitle Bar - Shows the name of the currently edited file (see File View) and whether the drawing has been modified. The initial file is called UNNAMED1.PLT.Page Navigation Bar. On the top right corner of the screen is the page navigation bar to help moving around multipage PLT documents. There are also three buttons (Titles, Page, Close) which also help with navigation (see Multipage Documents.Status bar - at the bottom of the screen there are four panels which provide information about current operations. The left panel provides general information about program actions (e.g., text of the currently selected label, save and open operations, x, y coordinates), as well as tool-tip help information about the function of buttons when the mouse cursor passes over them. The second panel gives the current step, the total number of steps, and identifies the line type of the current step (if any). Try to keep drawings below 2500 steps (absolute maximum is 2800). The third panel gives the current distance that the drawing cursor moves (in mm) when the number-pad keys are pressed. The Cursor Length Parameter can be changed using the <+> and <-> keys (the magnitude of the change is determined by the Cursor Multiply Parameter (usually 3x), i.e., 0.33, 1.0, 3.0, 9.0, 27.0 etc. mm). The properties of the cursor (Length, Multiply, and Direction) can be changed globally in the Options | Line Drawing menu, but we recommend keeping the default values. The right panel gives the current page and total pages of multipage drawings (p. 15 / 40).X Y Coordinates - One of the entries in the Options Menu is Show Cursor XY. When this is checked, the status bar continuously shows the XY coordinate of the current cursor position for measuring distance. There is an option in the Options | Screen Setup menu: Scale mm to Printer which determines whether the distances shown are in absolute PLT units, or in paper distance at the current print scale. You can initialize the coordinates to X = 0, Y = 0 by pressing the key <0> (number zero).Context Sensitive Help - a <Right-Mouse-Click> on most buttons will give pop-up help for using the button (in versions of Windows that support Microsoft hlp files - up to and including Win7).Grid. PLT can display either a dotted grid (dots at the grid points), or a lined grid (a square lined grid). Turn the grid display on or off in the Options | Show Grid menu. The distance between grid points or lines is set by the Grid (mm) Parameter in the Options | Screen Setup menu. Select the type of grid with the Grid Type Parameter in the same menu. You also select whether to scale the grid points in absolute units (select Dots or Lines), or in physical distance on the current output device, i.e., distance on the paper (select Dots Scaled or Lines Scaled). The grid is passive - you cannot align drawing points with the grid File Options DialogFile Locations can be set using the Options | File Options menu. For each type, click on the appropriate selection button (Templates, Initial Directory, NMR Spectra or Save To..), find the proper drive and folder using the drive and folder boxes, and click on the Save button to make the change permanent (save to the INI file).Templates. This is the folder where the PLT template files are stored (extension TEM). If you have used the default installation, then this will be c:\winplt32\plttem. Initial Directory. This is the folder that will be set when PLT first starts. The default is the folder containing the EXE file. If you store all of your PLT files in one location, then it is convenient to choose the path to these files for Initial Folder.NMR Spectra. This is the folder where File Open dialog will start when NMR spectra are loaded into PLT (menu Insert | NMR Spectrum).Save To.. Directory. This is a list of disk locations (path names, a maximum of 15) to which you can directly save the current file using the Files | Save To.. menu. This feature allows you to quickly save a file to multiple locations for backup or transportation purposes, without having to manipulate a file dialog. The same list is used for the Files | Open From.. menu. Place in this list the disk locations holding your PLT files. The Save To/Open From menu can also be obtained by <Right Click> on the Open, Save As and File View buttons.To add names to the list, find the proper drive, folder and subfolder and click on the Add button. You can only add drives that are currently accessible (e.g., to add a removable drive such as [a:] you must have a diskette in the drive, and the drive door closed). To remove entries from the list of path names, click on the name, and then on the Remove button. Clicking on Save and Exit will write the list to the INI file.Use PLT Open/Save Dialog Check Box. Check this box if you want to use the custom PLT file dialog, rather than the standard Windows dialog. The PLT dialog has some useful features such as separate drive, folder and filename lists, a file history list and the Save To/Open from list to speed up folder navigation. It lacks some of the features of the standard dialog, such as in-place editing of filenames (although filenames can be edited and deleted easily). File View. See File View DialogFile View DialogAccessed with the button or the Files | File View menu, for viewing, opening, deleting and capturing from PLT files. Use the Drive and File boxes to locate the appropriate folder. The default folder is the one specified in the Initial Directory File Location. All files which satisfy the filter (select *.PLT, *.TEM, or *.* from the pull-down list) will be shown in the file list box. Click on any of the names and the file will be shown on the screen, if a PLT file. To Open, Rename or Delete the file, click the appropriate button, or use the Files menu. If the PLT file has multiple pages, you can flip through the individual pages with the Page Navigation Bar or the Page Up and Page Down buttons (lower right of screen, below the right scroll bar).Cut and Paste Structures from Disk. Any portion of the drawing shown in File View can be boxed and captured with a <Right-Mouse-Drag> (same move as used to select a MODIFY box). The box can be repositioned with <Shift-Right-Mouse-Drag>. When you release the right mouse button, the structure will be pasted into the current drawing, and you will be in MODIFY. This allows you to position the structure (<Left-Mouse-Drag>) or <DELETE> it.Tip: To abort a capture, simply move the mouse so that the box contains no graphics material. If the file being viewed is a Template file, then double clicking on any Tagged structure causes it to be copied and pasted into the current drawing.Parameter Dialogs (Options Menu)The Parameter dialogs (Options | Letter Parameters, etc) are used to set various parameters which control the operation of PLT. For each parameter it is possible to directly type in a new value, or select from the options in a drop-down list box. OK Button. Accept the currently set values of the parameters. Changes are not automatically saved to the INI file, will apply to this session of PLT.Save Checked Button. If the parameter is preceded by a check box, then it will be automatically checked when a parameter is edited. If you click the Save Checked Button, then these values will be saved in the [Preferences] section of the INI file, and the change will become permanent.Reset Default Button. Click on this button to reset the default value of those parameters which are checked. These parameters will be removed from the INI file.Cancel Button. Leave parameter values as originally set. However, parameter values saved to the INI file are not restored to their initial value.Set for all Pages Checkbox. For a few of the parameters there is a checkbox marked "Set for all pages" (e.g., Print Scale, Line Length, Line spacing). These parameters are maintained independently for each page of a multipage drawing. If you want all pages to be set to the same value, click the checkbox, then click OK.Multipage Drawings Each PLT document can contain multiple pages (there is no real limit on the number of pages, but over 60 pages the navigation becomes a little more cumbersome). The largest PLT document prepared and maintained by the author is currently 550 pages long. Each page can be a complete drawing, and each will maintain its own page orientation (Landscape, Portrait), text size and Print Scale. There are several features that provide assistance in handling large documents:.Page Navigation Bar. Click on the page number to go directly to that page. A <Right-Click> on the navigation bar or on the Page-Up Page-Down buttons on the right bottom corner of the main PLT dialog (below the scroll bar) presents a menu of page operations which allows pages to be named, inserted, moved, created, copied, pasted, and reordered. See below for a description of the options. Some of these items are also in the Edit and Insert menus. The navigation bar also appears in Fileview. The slider allows rapid movement between pages, even past the 60 page page-number display. If there are more than 60 pages, a small box indicating the page number appears next to the navigation bar. Right-Click Menu of Navigation BarInsertPgAfter Create a new page after the current oneInsertPgBefore Create a new page before the current oneInsert File Insert a file from disk after the current page (file can contain a multi-page drawing - all pages will be inserted)Go To Page... Move to another page - type page numberCopy Page Copy the current page to the clipboardCut Page Copy the current page to the clipboard and delete the page Paste Page Paste the clipboard page(s) after the current pageDelete Page Delete the current page MovePg Up 1 Swap the current page with the one before itMovePg Down 1 Swap the current page with the one after itNavigation: by Page Name or Titles: Next to the Navigation bar are two additional buttons that can help with navigation: Titles and Page. Clicking Titles gives a list of headings (Style = 5) and subheadings (Style = 4) (if you have used these styles to define sections of your document). Clicking on Page gives a list of page numbers and page names (if you have named your pages). Double click on one of the entries to go to that part of your document. Click the Close button to dismiss the lists.Document Properties. The Options | Document Properties dialog provides another way to rapidly manipulate the pages of a large document. It presents a list of all the pages in a document, with page names. You can navigate through the pages, quickly delete individual pages, and edit the Page Names. The small up/down arrows will move the currently selected page up and down in the page sequence, allowing you to easily reorganize a drawing. This dialog is the preferred way to split a very large document into two separate documents - make a duplicate copy of the drawing, then delete half the pages from this one, and the other half of the pages from the original document.KeystrokesTo navigate among pages use the following operations: <ctrl-PgUp> Go to previous (lower) page number (or click the PgUp button) <ctrl-PgDown> Go to next (higher) page number (or click the PgDown button) <ctrl-Home> Go to first page <ctrl-End> Go to last pageTo split a page at the crosshair position (Crosshair must be on): <ctrl-Enter> or <ctrl-F5> Split page horizontally <alt-Enter> or <ctrl-F6> Split page verticallyPage Name. Right-Click on an existing label in your drawing and select Make Page Name from the pop-up menu. The page name will appear as a "Tooltip" if the mouse hovers over the page navigation bar, and will be listed in the Options | Document Properties dialog, where the Page Names can be easily edited.Page Numbering. A page-numbering system is available for PLT documents. To turn page numbering on/off select from the menu Options | Print Options | Page Number Position | None/Bottom Center/ etc. You can reset the page number on any page of a multi-page document, and can set the format of how the page number is displayed. Go to the page where you want the renumbering to start, and select the Options | Page Number Reset/Format menu. The Page Number dialog appears, and you can add a new page number to the New page number textbox, and click the Apply button. This will print a plain number. If you want to have a more complex page number, fill in the Pre-Text and Post-Text boxes in the New page number format boxes. The {Page#} code represent the page number itself (see also Formatting text with braces). Page numbering and format are document properties. Code: Appearance:-{Page#}- -21-Section A-[{Page#}]Section A-[21]5-HMR-2.{Page#}5-HMR-2.21(C=12}5-HMR-2.{Page#}{c}5-HMR-2.21 (page number printed in red (color 12)In this way you can have multiple sections in a document, and restart the numbering at 1 for each section. You can move through the various page number set points by clicking the Previous Page Number Set and Next Page Number Set buttons.You can also insert the current page number into any label in a drawing, in case you want to place a page number label at an arbitrary position on a page. Simply place the text {Page#} into any label, and PLT will replace it with the current page number.Mouse Operations in MainAll features of PLT can be controlled with the mouse. For drawing with the mouse, see Drawing Lines. Here are the mouse operations:On Buttons<Left-Click> Execute the button operation<Right-Click>Context sensitive help for the button. For the FileView, FileOpen and FileSave As buttons, a <Right Click> will give the "Save To.." menu, in addition to a Help entry.On the Drawing Area in MAIN<Left-Click> Make a point, select a line or label. Same as <ENTER> key<Left-Double-Click>Positively select a line (highlight it). A Double-Click on a label calls up the WRITE dialog. If there is no near graphic element (line or label or other object) then PLT will find the closest point.<alt-Left-Click>Hold down <alt> key and click left mouse button. Make a point along hexagonal grid (0, 30, 60, 90 degrees), an integral number of bond lengths long.<ctrl-Left-Click>Hold down <ctrl> key and click left mouse button. Deletes graphic element (line or label) at the click position. Same as <DELETE> key or button.<Left-Drag> Hold down the left button and move the mouse. Move a close line or label. Similar to <shift-Cursor> or <shft-Mouse > move. If in an open region of the page (no close line or label), then move the viewport for the page.<alt-Left-Drag>Hold down the <alt> key and the left button and move the mouse. Move a close line or object in perfectly horizontal direction. <ctrl-Left-Drag>Hold down the <ctrl> key and the left button and move the mouse. Move a close line or label in perfectly vertical direction. CAREFUL: a <ctrl-Left-Click> will delete the current object or line.<Right-Click> Draw a line from last point referenced or <Left-Click> position. Same as <Draw> key. <Right-Click> on Label gives a Pop-Up menu with several choices.<alt-Right-Click>Draw a line along hexagonal grid (0, 30, 60, 90 degrees) an integral number of bond lengths long.<Right-Drag> Hold down the right button and move the mouse. Select a rectangular area for MODIFY. If hold down the <shft> key before mouse button is released, then entire enclosing box can be moved for accurate capture of the MODIFY segment.<alt-Right-Drag>Hold down the <alt> key and the right mouse button and drag the mouse. Select an arbitrary part of the drawing with a lasso, for MODIFY.<Left-Right-Click>Simultaneously click the left and right mouse buttons. Equivalent to <ESC> key - forced exit from MODIFYMouse WheelThe Mouse wheel is active in MAIN, NMRSpec, Graph, File View, Modify and the Options | Document Properties dialog to facilitate screen adjustments:<Mouse-Wheel>Scroll the screen vertically <alt-Mouse-Wheel> Scroll the screen horizontally<ctrl-Mouse-Wheel> Adjust the screen scaleKeystrokes in MAINPLT started its life as a DOS drawing program operated entirely with keystrokes, and many of these keystrokes are still operative, although there are now more convenient or easier to remember Mouse, Button or Menu operations that perform all of the essential functions. Often nothing rivals a keystroke for speed, so experienced users of PLT might consider accessing some of more frequently used operations through the keyboard.The following keystrokes are operative in the MAIN Drawing Routine:<A>Arrow - Draws an arrow at the current position, or replaces current line. <alt-A>Menu of Arrow types. Also in menu: draw a line with defined length and angle. <ctrl-A>Save As.<B>Bisect - Draws a line of one bond length, bisecting the current line junction. <alt-B>Alt-Bisect - menu of alternate bond types for Bisect. <ctrl-B>Bezier curve.<C>Clear (Refresh) the screen, erase unconnected points. <alt-C>Clear screen. <ctrl-C>Copy current selected object (label or Modfy segment).<D>Draw a single line replacing current line, or connecting the last point referenced. <alt-D>Alt-Draw - menu of line alternate bond types <ctrl-D>Down: convert the selected line to Down stereochemical bond type<E>Erases the currently selected graphics object. <alt-E>Edit menu <ctrl-E>File Save<F> File View - display PLT drawings, capture structures from disk files. <alt-F>File Menu <ctrl-F>Find and replace dialog<G>Moves the cursor to the cross hairs (Go to). <alt-G>Toggle/set position of cross hairs. <ctrl-G>Graph.<H>Hidden line cut. <alt-H> Help <ctrl-H>Change currently selected line to follow Hex-Grid (angle - multiple of 30 degrees, length multiple of bond length). <shft-H>Align current point horizontally with cross hairs.<I> <ctrl-I>Make current selected line normal thickness.<J>Toggle between the Lines/Labels side menu. <ctrl-J>Make current selected line thick (bold).<K> <ctrl-K>Make current selected line thin.<L>Load a drawing from disk (Open). <ctrl-L>Make lines - convert current selected Alt-Bond to lines.<M>Initiate Modify (use cursor keys to draw enclosing box). <alt-M>Select a nearby structure into Modify<N> <ctrl-N>Insert NMR Spectrum. <alt-N>Start new drawing.<O>Scroll - center drawing at current cursor position. <alt-O>Options menu. <ctrl-O> Open PLT drawing file.<P>Print drawing using current print setup. <ctrl-P>Print setup<Q>Quit.<R>Ring (draw an arbitrary regular polygon) <alt-R>Alt-Ring - menu of ring alternate bond types <ctrl-R> Reverse - altbonds left/right; toggle logical direction of atom labels.<S>File Save as. <alt-S>Slideshow <ctrl-S>Switch - altbonds top/bottom; interconvert First, Middle, Last label position.<T>Template database. <ctrl-T>Insert scanned NMR spectrum. <alt-T>Template fileview.<U>Undo. <alt-U>Undo <ctrl-U>Convert the selected line to Up stereochemical bond type<V>View other drawing (switch between active drawings). <alt-V>Cycle between active drawings. <ctrl-V>Paste previously copied object. <shft-V>Align current point vertically with cross hairs.<W>Write Dialog. Prepare text material and atom labels.<X>Undo last move - can be used repeatedly to erase steps in reverse drawing order. <ctrl-X>Cut and Copy current selected object.<Y>Y-Split - draw diverging lines at the end of a line or the intersection of two lines. <alt-Y>Y-Spiro - draw a spiro ring at the end of a line or the intersection of two lines.<Z>Toggle between Zoom scale (large) and normal scale. <alt-Z>Zoom menu <ctrl-Z>Toggle between Ctrl-Zoom scale (small) and normal scale.<0>Zero: initialize the value of the X, Y coordinates (when Options | Show Cursor X-Y is turned on).<1> - <9>Add the appropriate label style to the current label (these are the number keys of the keyboard, not the number pad).<DEL>Erase currently selected graphics object.<ESC>Exit dialogs; soft erase of recent screen points.<ENTER>Make a point, set starting point for a line. <ctrl-ENTER>Split page horizontally at cross hair position (if on) <alt-ENTER>Split page vertically at cross hair position (if on)<SHIFT>Move to closest point in drawing.<SPACE>Clear lines crossing current line, or lines crossing current label. <ctrl-SPACE>Clear all lines crossing labels.<CURS>123,456,789 keys - move drawing cursor <shft-CURS>Move current point.</>Toggle Keyboard cursor direction between 30 deg and 60 deg.<!>Switch to ctrl-Zoom (small) scale.<@>Switch to normal scale<#>Switch to Zoom (large) scale.<$>Switch to alt-Zoom (extra-large) scale<">Draw a keto group at intersection, acyl group at end of line.<:>, <;>Draw a connecting double bond (Mid at intersection, Left/right at end of line)<=>Move to closest point in drawing.<*>Center cursor.<+>Change the keyboard cursor by a factor of 3 (e.g., 3 mm to 9 mm).<->Change the keyboard cursor by a factor of 1/3 (e.g., 3 mm to 1 mm).<ctrl-PgUp>Move to next page <ctrl-PgDn>Move to previous page<ctrl-End>Move to last page<ctrl-Home> Move to first page<F1>Context sensitive help. <shft-F1>Add Style = 1 to current label (if any).<F2> <shft-F2>Add Style = 2 to current label (if any).<F3> Find again (find and replace dialog) <alt-F3>Delete all docking labels in drawing. <ctrl-F3>Add docking label at current position [\\]) <shft-F3>Add Style = 3 to current label (if any).<F4>Increase Letter width (B) of current label (Font=0 only) <ctrl-F4>Close current drawing. <shft-F4>Add Style = 4 to current label (if any).<F5> Decrease Font Size of current label (R) <shft-F5>Add Style = 5 to current label (if any). <ctrl-F5> Split page horizontally at crosshair position (if on) (also <ctrl-ENTER>)<F6>Increase Font Size of current label (R) <shft-F6>Add Style = 6 to current label (if any). <ctrl-F6> Split page vertically at crosshair position (if on) (also <alt-ENTER>)<F7>Rotate current label counterclockwise<F8>Rotate current label clockwise<F9>Move backwards one step along sequence of steps. <alt-F9>Move backwards five steps. <shft-F9>Move backwards 25 steps. <ctrl-F9>Move to step 1 (beginning) of drawing<F10)Move forwards one step along sequence of steps. <alt-F10>Move forwards five steps. <shft-F10>Move forwards 25 steps. <ctrl-F10>Move to last step (end) of drawing ----------Keystrokes in ModifyColors in PLT, and the Edit Color MenuLabels and lines in PLT can be drawn in any of 16 colors. Each of the 16 colors can be selected from a palette as large as your monitor supports. Color assignments can be changed in the Options | Edit Colors dialog. This dialog provides a list of the current colors and color names, and the name of the current color scheme (up to 6 different color schemes can be defined). Default Color. When no color is specified for a line or label, then it will be printed in Color 0 (black). Thus changing the definition of color zero will change the colors of all lines and labels in the drawing, except those specifically drawn in a different color, using the line or label color buttons.Changing a Color: Click on one of the color items 0-15. The name will be highlighted in blue. Click the Select Color button, and choose from the color dialog. You should also type a new name for the color, to aid in picking the color from the color menu later.Reset Default Button. This will reset all of the colors and color names to their "factory setting", as originally defined by PLT. Save INI Button. This will save all changes made to the INI file. The currently displayed colors will be used by PLT from now on. If you do not click this button all changes will eventually be discarded.OK Button. This will close the Edit Color dialog without saving the color assignments to the INI file. However, changes made in the current Color Scheme will remain in effect until you exit PLT.Cancel Button. This will close the Edit Color dialog, all changes made will be discarded.Screen Colors. The dialog box also contains five color boxes which show the color assignments for the Background, the contents of the Modify box, the Highlight color used to mark selected lines and labels, the color of various Handles (such as the markers for [\\] labels), and the Grid color. These colors cannot be assigned independently, but must be chosen from one of the 16 color numbers. To change these assignments click on one of the colors, and then click on the appropriate color box (Background, Modify, etc). Background Color. You can set the background color to one of the color numbers as follows: Click on one of the colors (0-15) and then click on the Bkground Color box. Important Note: If the background color is set to anything other than white, a grey or black background will be printed when black and white hard copy is being prepared. To allow use of arbitrary color schemes on screen, and still print properly Black-on-White with printers that do not support color, the Print Setup routine as well as the Edit Colors dialog has an option: Print Black-on-White, If this box is checked, then the background will always be printed white, and all other colors will be printed black, no matter what the color assignments are.Changing Color Schemes. Select a Color Scheme from the pull-down list. Initially all 6 of the color schemes are identical, and have the name "Default Colors". After you have edited a color scheme you should change the name for easy future recognition using the Edit Name Button.ButtonsAbsolute Angle Button0-158700This button (in Extended Bisect panel) allows the construction of a straight line with arbitrary length, specified in mm, and arbitrary direction, specified in degrees counterclockwise from right-horizontal. Also accessed in the <alt-A> pop-up menu.Bezier Curve Button0-190500The Hot key is <ctrl-B>. PLT can draw continuous arbitrary smooth Bezier curves using the Insert | Bezier menu or this button. Draw a series of three connected lines (<Right-Mouse-Clicks>which define the first four Bezier points. Then press the button and select from one of the types of curves. To make the curve longer, add one to three more line segments, and press the button again. This can be repeated until you get the curve as long as needed.The curve is "live", and can be edited at any time by dragging the control points (small red squares) with <Left-Mouse-Drag> or <shift-Mouse-Move>, or by enclosing some or all of the point in MODIFY. The curve can also be changed to another Bezier type using the Bezier button - <Double-Click> near one of the control points, press <F10> (forward) to move along the line, then select a different Bezier line.Bisect Button The Hot Key is <B>. For a PopUp menu of various bond types, use <alt-B>.The drawing cursor can be placed at the line end or line intersection of interest by clicking on it with the mouse, or by "finding" the point with a nearby double click, <=> key, <Shft> key, or <F9> and <F10> keys (Backward/Forward).The addition of angular substituents in some polycyclic structures can be done directly with Bisect or <alt-B>. A set of extended bisect operations is available.Bisect Extended Buttons These buttons, accessed by clicking this button: provide extended features for adding various graphics elements at the intersection of two lines (bisecting the angle), or at the terminus of a line.Color Panel034600Clicking on the appropriate color will change the color of the currently selected line or label. If in MODIFY, all of the lines in the Modify segment (but not the labels) will be colored. If hold down the <ctrl> key then BOTH lines and labels in the MODIFY segment will be colored. To color only the labels in a Modify segment use the Label color button. The colors corresponding to the various color numbers (0-15) can be edited in the Options | Edit Colors dialog.Cross Hairs Button 0222300A position on the screen can be marked with cross hairs by clicking on the Cross Hair button or by pressing <alt-G> (this marks the Docking Target). Clicking on the Cross Hair button or pressing <alt-G> again removes the cross hairs. The cross hairs can be used as guide lines to visually align points or labels. The cross hair position also serves as a Docking Target in MAIN and MODIFY. In MAIN, clicking on the Vertical align or Horizontal align button or pressing <shft-Vert> or <shft-Horizontal> will align the current point (either a label, or the end of a line) horizontally or vertically with the Docking Target. Pressing <G> will move the drawing cursor to the Docking Target. The cross hairs can be dragged with a <Left-Mouse-Drag>. These buttons have an important function in MODIFY.Cut, Copy, Paste, Delete Buttons031800These have the usual functions in Windows programs. Cut (hot key <ctrl-X>) and Copy (hot key <ctrl-C>) applies to the currently selected label, graph, NMR Spectrum or other object, or to a Modify Segment if present. Paste (hot key <ctrl-V>) applies to anything in the clipboard – this can be a PLT label, part of a PLT drawing copied in Modify, text copied from another program or an image (BMP, WMF) copied from another PLT document or from elsewhere. Delete applies to any currently selected material in the PLT drawing – a line, a label, graph, NMR Spectrum or other object, or the current Modify segment.File Open and Save Buttons 0158800These buttons are equivalent to the menu operations File | Open, File | Close, File | Save, and File | Save As.... Save will write over the currently open file on the disk without warning. Save As allows selection of a new filename and/or path, and warns if such a file already exists. The hot keys are <L> (Load) for Open, <ctrl-F4> for Close, <ctrl-E> for Save and <S> for Save As. The files menu also has the useful shortcut entries Files | Save To,,, and Files | Open From ... which allow you to select the path for the Save To or Open From a list. This list can be edited in the Options | File Location menu. You can also get the Save To… and Open From... menus by right-clicking the File open or File Save as buttons.File View Button Hot Key is <F>. This allows viewing of all PLT files on disk. The files can be Opened, Renamed or Deleted and parts of any disk drawing can be copied from disk and pasted into the current drawing.Flip and Reverse Buttons0269900These buttons perform positioning adjustments on labels (first, middle, last), left-right and forward-backward reversals on unsymmetrical Alt-Bonds (Left, Rt-Double, Arrows, Rings, etc) and symmetry operations on Modify Segments (flip vertically and horizontally). The hot keys are <ctrl-R> for left-right and <ctrl-S> or up-down.Graph Button 0-349200This initiates the PLT X Y Graphing routine, which allows the preparation of simple XY graphs, with control of point and line types. A graph is treated as a single label whose position is at the bottom-left corner of the graph. Several graphs can be placed in a single drawing. To edit an existing graph, double click the red square at the graph origin, or click inside the graph before clicking on the Graph button. Pressing the Graph button is equivalent to the menu selection Insert | Graph.Graphs are transparent - you can superimpose chemical structures on a graph, or superimpose graphs on each other. The hot key is <ctrl-G>Keto Button The Hot Key is <"> (quotation mark) or use <alt-B, K>Line Cut Button 0-349200The Hot key is <SPACE BAR>, used to cut crossing lines, and lines which cross labels. To cut lines for all labels in the drawing, use <ctrl-SPACE BAR>. This button will also cut all labels in a Modify segment.Clear labels:Line Thickness Buttons 0000The hot keys are <ctrl-I> (normal), <ctrl-J> (thick), <ctrl-K> (thin, shown as grey on the screen). There is no hot key for the extra-thick line or the extra-thin line. These commands apply to the current line (if any). The current line can be selected by either single clicking or double clicking on a line, or by moving over the line with the forward or backward keys (<F9>, <F10 The line thickness buttons will not affect labels. To change the thickness of a group of lines, place them in Modify, and click on the appropriate button, or use the keystrokes <ctrl-I> for normal, <ctrl-J> for bold, <ctrl-K> for thin.Changing the Line Thickness Definitions: Line thicknesses can be set with the parameters Normal Linewidth, Thick Linewidth, Thin Linewidth, Extra-Thick Linewidth and Extra-Thin Linewidth and can be scaled with the Relative Line Width Parameter in the Options | Line Drawing menu.The line thickness operation is distinct from the Bold Alternate Bond type.Mid Double Bond Button The hot key is <:> (Colon or Semicolon) or use <alt-B, M>. See Mid-Double.New Drawing Button The hot key is <alt-N>. Start a new drawing.NMR Button0-301600This initiates loading or editing an NMR spectrum. An NMR spectrum is treated as a single label whose position is at the left origin of the spectrum. Several spectra can be placed in a single drawing. To edit an existing spectrum, double click the red square at the graph origin, or click inside the spectrum boundaries before clicking on the NMR button. Pressing the NMR button is equivalent to the menu selection Insert | NMR Spectrum.Print Buttons0-254000The drawing can be printed directly using the current settings by clicking on the left print icon, or by pressing <P> in MAIN. The right icon brings up the Print Setup dialog, also accessed from the Print Setup dialog in the Files menu.Quick Label Buttons 0-349200In MAIN, clicking on one of these buttons directly adds the atom or group label shown. Click on the small blue arrow to see the second larger panel. If the Left/Right sense of the label produced is not as needed, click on the Switch or Reverse buttons. PrSave Button0333400This button or the Files | Save menu saves the PLT file under the current file and path name. Previous versions of the file will be overwritten without warning. However, if the drawing still has the original name (UNNAMED1.PLT) then the File Save As dialog will appear.Save As Button0-111100This button or the Files | Save As menu allows specification of a new filename and disk location to save the PLT file. If a file with the same name is present, you will be warned. A right-click on this button gives the "Save To..." (same as "Open From...") menu of Directories.Screen Scale Zoom Button 0-206400These buttons are used to control screen scale and offset. Click the extra small, small, medium, large or extra-large rectangles to set the appropriate scale: small (ctrl-Zoom Scale, key <!>), normal (Normal Scale, key <@>), large (Zoom Scale, key <#>) and extra-large (alt-Zoom scale, key <$>). The scale values are set in the Options | Screen Setup menu. Clicking the highlighted (red) rectangle will center the drawing at the current cursor position (i.e., to place a portion of the drawing at the center of the drawing area, click at that position, and then click on the current scale).Holding down the <ctrl> key during a click on one of the zoom buttons will center the page on the screen.The <ctrl-Z> and <Z> key strokes will also change the scale of the screen presentation, but in a toggle fashion, i.e., pressing <Z> will increase the scale, pressing <Z> again will return the screen to normal scale. Similarly for <ctrl-Z>. Pressing <ctrl-Z> will also center the drawing on the screen.Note: The screen scale has no effect on output or exported material (printing, metafiles, BMP and GIF files, HTML documents). The scaling of output material is determined by the Print Scale Parameter, set in the Printer Setup dialog.Switch and Reverse Buttons Switch Button <ctrl-S> Reverse Button <ctrl-R>: These buttons perform several functions related to creating mirror image structures of graphic elements and labels. Labels: <ctrl-S> will cycle between F, M, and L Label Position. <ctrl-R> will reverse direction of label (e.g., L > HOOC to F > COOH) if chemically reasonable.Lines: <ctrl-S> will change the left-right orientation of lines such as Mid-Double Bond and Half-Arrow. <ctrl-R> will change the direction of vector lines such as Arrows and Wedges.Rings: <ctrl-S> and <ctrl-R> will change the left-right orientation of simple rings while they are “live” (immediately after they are generated). For more complex structures such as chair cyclohexanes <ctrl-S> and <ctrl-R> will have different effects. Experiment!Modify: <ctrl-S> will invert the Modify segment around a horizontal axis, <ctrl-R> around a vertical axis.Template View Button Hot Key is <T>. This allows viewing of the template (*.TEM) files on disk (stored in the WINPLT\PLTTEM folder by default). The files can be Opened, Renamed or Deleted and parts of any template can be copied from disk and pasted into the current drawing.Undo and Redo Buttons The hot key for undo is <U>, for redo <alt-U>. All of the unitary operations performed while editing, creating or deleting lines and labels can be reversed with Undo. The Modify Segment can be returned to its initial condition with Undo. All operations which add, move or delete pages in Multipage Drawings can also be undone. The Undo operations can be undone with redo. There are currently 50 levels of Undo. Note, however, that when you switch to a new page, or another drawing the undo history of the previous page or drawing is lost and changes cannot be undone.Note that individual operation inside the Write, NMR Spectrum and Graph editing dialogs cannot be undone, but the label, spectrum or graph can be returned to its original state when the dialog was called.The <X> key (or X-Button) performs a related erase function, it will sequentially delete all elements of a drawing in the reverse order in which they were created.View Button0-206400The hot key is <V>. This will toggle between the last two drawings opened. All 14 of the drawings have separate screen and print scales and drawing names, but they share the other global parameters in the Options menu. Portions of a drawing may be copied from one drawing to another using Modify. You can have up to 14 drawings open simultaneously in PLT. Select from the Window menu.Write Button0158800Click on this button to call up the WRITE dialog (also <W> key), which provides extensive capabilities for producing and editing text material. If the cursor is currently on a label, then WRITE allows you to edit the label and its associated parameters, otherwise a new label is started.X Button0127000Clicking on this button or <X> key erases graphic elements in a PLT drawing in the reverse order in which they were drawn, one step at a time. A graphic element can be a line or a label, or a graph, NMR spectrum, image (which are really just fancy labels). It is an unlimited Undo button, but only the last step can be recovered with an <Undo> command.Y-Split and Y-Spiro Buttons The Hot Key is <Y>. The Hot Key is <alt-Y>.Clicking <Y> opens a menu of ring sizes (3-9), clicking one creates two new lines bisecting the line or lines which at the current position. The ring size selected determines the angle between the new lines. Clicking the <alt-Y> button brings up the spiro menu with 3-9 membered rings, as well as the entries Dioxolane and Dithiane. Making a menu selection draws the ring size or type selected. The Bisect Extended Buttons provide a number Y-splits with stereochemistry.Drawing Lines Drawing Lines with the MouseDrawing Lines with the Cursor KeysLine Thickness and Color Editing ColorsAlt-Bonds Make LinesDouble Bonds Mid-Double BondsTriple BondsRings Cyclohexanes Fused Rings Spiro Rings 3D-PerspectiveArrowsStereochemical IndicatorsKeto GroupsBisectExtended BisectY-Split and Y-SpiroAttaching Lines to Existing StructuresCutting Lines Which Cross Lines and LabelsBezier CurvesCurvesGraphsScaleDrawing LinesFree Hand Drawing with Mouse. There are a number of ways of drawing lines in PLT. Free-hand drawing with the mouse is accomplished as follows: To draw a line make a point (starting point of a line) with a <Left-Mouse-Click>, then move the mouse, and use a <Right-Mouse-Click> to draw a line between the previous point and the current position. Either end of the line can be moved with a <Left-Mouse-Drag> or a <shift-Mouse> move.Defined Direction with Mouse. If you want the line to have a well-defined direction and length, e.g., perfectly horizontal, perfectly vertical, or exactly following the 30, 60 degree hexagonal grid then hold down the <alt> key while performing the above operations (<alt-Left-Mouse-Click> to set a point, <alt-Right-Mouse-Click> to draw a line) . The angle of the line will be the closest multiple of 30 degrees, and the length will be the nearest integral multiple of the Bond length Parameter. This length is usually 9 mm, but can be set in the Options | Line Drawing menu. We recommend leaving it at 9 mm, for proper balance between various dimensions.Drawing Lines with the Cursor Keys. Simple lines can be drawn using the keyboard. Use the number pad keys to move the Cursor on the screen. The corner keys (<7,9,3,1>) will move the cursor at an angle of 30 or 60 degrees (toggle between these with the </> (slash) key). For special purposes, other angles can be set in the Options | Line Drawing | Cursor Angle menu. The distance moved by the Cursor is controlled by the cursor size parameter, which can be adjusted up or down with the <+> and <-> keys. The Cursor Size can also be changed in the Options | Line Drawing menu, but we recommend leaving it at a multiple of the bond length (1, 3, 9, 27 mm). The default increment for the change in Cursor Size is a factor of 3, this can be changed in the Options | Line Drawing | Cursor Multiply menu.Press <ENTER> to make a point for the beginning of the line. Then move to the end of the line and press <D> to draw a line. You can also press <alt-D> to draw more complex lines (AltBonds) such as dotted, dashed, double, triple, etc. Select from the PopUp menu. Similarly, to draw rings use <alt-R>, and for arrows <alt-A>. If the cursor is at the intersection of two lines, then <B> will draw a bisecting line, and <alt-B> allows the introduction of any of the Alt-Bond types.Hexagonal GridWhen working on a hexagonal grid (most 3-ring, 6-ring and acyclic structures follow a hexagonal grid), it is important to recognize that the grid can be oriented in two ways: vertex down (30 degrees) or side down (60 degrees). The command </> is used to switch the corner cursor keys (Home, PgUp, End, PgDn) between the two orientations.When drawing with the mouse, hold down the <Alt> key during Right- and Left Mouse clicks to produce points and lines that follow the hexagonal grid. An existing line can be converted to a 0, 30, 60, 90 degree line and an integral length by selecting it (double click on the line) and clicking on the cHx entry in the side menu, or pressing the <ctrl-H> key.It is good drawing style to stay within one of the grids for an entire structure.Alternate Bonds - the Side MenuLines in PLT. A PLT drawing consists of a series of positioning moves, lines (vectors), objects (NMR spectra, graphs, images, frames) and labels. Most lines in a drawing will represent single bonds, but others will have a more complex structure: dotted lines, dashed lines, bold lines, hatched bonds, double bonds, triple bonds, and others. These are also internally represented as lines, and will be referred to as Alternate Bonds (Alt-Bonds). All of these lines are shown on the screen as a grouping of lines, but they will all move together, and the individual components cannot be changed or accessed by the usual editing procedures (such as Mouse-Dragging), only the start and end point of the line can be changed. All Alt-Bonds can be converted to their component lines by selecting the Edit | Make Lines menu item when the Alt-Bond is highlighted.The Side Menu. The Alternate Bond types are presented on the side menu in MAIN. All of these are also available using only the keyboard with <alt-A> (arrows), <alt-D> (line drawing) and <alt-R> (rings). Stereochemical Indicators0-79400These Alt-Bonds provide stereochemical indicators: three "Up" stereochemistry types (Bold, Wedge, and Thin-Wedge), and four “down” stereochemistry lines (wedge-hatched, hatched, dashed, and dotted). Use the <alt-D> key for a PopUp menu of these line types. There is also an undefined stereochemistry line, wiggly. A selected bond can be converted to any of these by clicking on the appropriate symbol in the MAIN side menu or with the <alt-D> PopUp menu. These entries perform the following functions: cUp (<ctrl-U> key) will draw a stereochemically Up bond, as defined by the Up Line Type Parameter (Options | Line Drawing menu). cDn (<ctrl-D> key) will draw a stereochemically Down bond, as defined by the Down Line Type Parameter. cHx (<ctrl-H> key) will "clean up" the currently selected line (place in on the hexagonal grid, and make it an even number of 3 mm increments long). cHx is most often used to straighten lines that should be perfectly horizontal or vertical, but it can also be used to fix damaged hexagonal structures. A stereochemical dot indicating an "Up" substituent is added from the Quick Label Buttons (this adds the label [ ^. ]). In the WRITE routine, select the Symbol | Large Dot entry, or select from the character bar.Drawing Double and Triple Bonds There are several procedures for entering double and triple bonds. The distance between the two lines of double bonds can be adjusted with the Double Bond Separation Parameter in the Options | Line Drawing menu. Left-Right Double BondsLeft/Right double bonds are used when one of the lines of the double bond is to be aligned with a point or vertex, e.g., within rings, or in zig-zag structures. Select from the Side Menu of line types (or use <alt-D>).The Left-Right orientation is automatically set by PLT to fit the current situation, but can be changed with the <ctrl-S> key (Switch Button), as shown. The length of the shorter of the two bonds of a Left/Right double bond is controlled by the Left/Right Double Length Parameter in the Options | Line Drawing menu. Converting an existing line to a double bond can also be accomplished by selecting the line with the <F-9> and <F-10> (backward and forward) keys, and then clicking a bond type. Mid Double Bonds Mid Double bonds are used at the intersection of two lines, when the double bond should be centered on the intersection and accurately bisect it. At the end of a Mid-Double Bond, Mid will complete an allene.In a clear area, the Mid Button or <:> (colon or semicolon) key or <alt-B, M> keys will draw a line ±30 degrees from horizontal. At the end of a line, Mid will continue a zig-zag chain with a Left-Right Double bond.To draw an all-trans polyene, simply alternate between Bisect and Mid-dbl. PLT will automatically alternate between + and – 60 degrees directionTo create a cis-double bond, delete the previous single bond with <X>, and press Bisect againDouble Bonds within Text MaterialUse the equal sign for double bonds within a chemical formula (see also Formatting with Braces): CH2=CH2Triple BondsTo produce an isolated horizontal triple bond, click at the start position, and then click on the triple bond in the side menu.To attach a triple bond to the end of single bond, use the extended bisect button:To produce triple bonds in more complex structures, first draw a single bond, then convert it to triple by selecting it and clicking on the side menu; e.g., Cyclooctyne:To place the character triple bond in a label use [ ^ = ] (select from the Bonds menu in WRITE).KetonesKetones are most conveniently added with the Keto Button. On a clear section of the screen, two clicks on the Keto button will draw a ketone. A third click will draw a 1,2-diketone:At the intersection of two lines, Keto will draw a perfectly bisecting ketone. A related Keto group with an explicit carbonyl carbon is in the Extended Bisect Panel.At the end of a Mid-Double Bond. Keto will draw a Ketene:Keto groups can be placed inside text labels using keto-braces formatting.Brackets, Rectangles, and Circles 57150269900Several types of enclosing graphics can be directly added as Alt-Bonds. This includes rounded rectangles, square brackets, resizable rectangles and circles. The Alt-Bond line represents the diagonal or diameter. The figures remain "live" and can be easily changed in size by dragging a corner. Arrows0-142900 Clicking on one of the arrows in the side menu produces one the four types of arrows (equilibrium, arrow, small-arrow, half-arrow, resonance). Pressing the short-cut key <A> in a clear region of the drawing area produces a horizontal arrow 2 bond lengths long. The tip or beginning of the arrow can be dragged in a true horizontal direction with <alt-Left-Mouse-Drag>, or arbitrarily with <Left-Mouse-Drag>. Use the <alt-A> key for a PopUp menu of the other arrow types.The direction of all arrows can be reversed with <ctrl-R> (or press Reverse Button). The top-bottom of half arrows and reversible arrows can be flipped with <ctrl-S> (or press the Switch Button).Arrows within text material (labels) can be produced as follows using special characters:RingsDrawing Simple RingsTo start a Ring: select from the side menu or use the <alt-R> key for a PopUp menu of the ring types. PLT will choose a suitable orientation of the ring. Although all of the rings are initially placed on the screen as Alt-Bonds (they are highlighted – “live”), they will be converted to individual lines when you perform any editing operation on the drawing area. However, while they are highlighted, you can convert them to other ring sizes or types of Alt-Bonds (e.g., switching between the two Kekule structures for benzene). If you want a ring to remain as an Alt-Bond (a single vector), and not get automatically converted to a series of individual lines, then select the Edit | Make Lines menu item when the ring is highlighted. Doing this means that you will not be able to manipulate the individual lines of the ring, only the Alt-Bond line. You will, however, be able to change the size and orientation of the ring arbitrarily by dragging the ends of the Alt-Bond line. 3-8 Membered Rings. Click on one of the rings in side menu. While the ring is “active” (still highlighted) you can click on other ring sizes:You can start a ring with a pre-drawn line, and this will determine the orientation and size of the ring. If the left-right orientation is not correct, press the Switch button or <ctrl-S> (cyclopentanone):Here a drawing of Cyclohexenone (uses the Keto button) or 3,3-Dimethylcyclohexenone (uses the Extended Bisect panel):Here is a complete steroid in 17 Mouse clicks:Arbitrary polygons can be drawn by selecting the Insert | Ring (Polygon) menu or <R> keystroke (Ring) - specify the length of a side and the number of sides to the polygon. The individual lines of the ring can then be further edited, if needed.0127000Chair Cyclohexanes. There are three different bond types in a chair cyclohexane, and two ring flip forms of each. As for benzenes, you can convert among the different cyclohexanes while the ring is highlighted. You can also use the Switch and Reverse Buttons or the <ctrl-S> and <ctrl-R> keys to cause ring flips and direction reversals.It is possible to draw all combinations of single and fused (cis or trans) ring flipped chair cyclohexanes with the six types of cyclohexane Alt-Bonds in the side menu (or the <alt-R> PopUp menu). A chair cyclohexane has three types of "parent" bonds. For drawing a single chair, it does not matter which you choose, but for fused rings (e.g., decalins), the three types allow you to create proper ring fusions. Experiment with a single cyclohexane, <Left-Click> on one of the bonds to select it, and then click on a second cyclohexane to fuse another ring and use the Switch and Reverse Buttons (or press <ctrl-S> and <ctrl-R>) to change the orientation. For each ring, the highlighted bond will be the one placed on top of the currently selected bond (if any). Remember, that if at any point you click on the screen, or use other drawing commands the single-step editable Alt-Bond cyclohexane will become a set of six lines in the shape of a cyclohexane, and <ctrl-S> and <ctrl-R> will no longer work. 0-301600Benzene Rings. There are three types of benzene rings. The highlight identifies the Alt-Bond line. As for all of the Alt-Bonds, when one of these has been placed on the screen, the ring will be highlighted (it is “live”). At that time you can click on one of the other benzenes, or any other Alt-Bond. You can also press <ctrl-S> to interconvert the three types of benzene rings.Alt-BondsDrawing Structures with 3D PerspectiveSpiro-Fused RingsCyclohexanesDrawing Fused RingsFusing one ring to another is a simple process. Draw the first ring in the desired orientation, then add rings as needed.While the new added ring is highlighted, you can change it to any other type of ring or line, or DELete it. Clicking anywhere on the drawing area will remove the highlight, and convert the ring to a series of lines).More Complicated RingsThere are many fused, bicyclic and other more complex ring structures in several of the template files (RINGS.TEM, CYCLOHEX.TEM, AROMATIC.TEM, AZAAROM.TEM, STEROIDS.TEM, SOLIDS.TEM and others).Hexagonal GridSpiro Rings??Fused RingsAlt-BondsDrawing Structures with 3D PerspectiveSpiro-Fused RingsCyclohexanesAttaching Lines to Existing StructuresIn precision chemical structures it is important to properly attach lines to existing vertices. To do this you have to find the point or select a line, done as follows: To specifically move the cursor to an existing point, press the <Shift> key, the <=> key, or do a <Left-Mouse-DoubleClick>. This will find a close point or a close line. If you clicked on a label, PLT will find the label. Commands such as Bisect, MidDouble, Y-Split or alt-YSpiro or keystrokes such as <alt-B>, <Y> and <alt-Y> will automatically find a vertex of the drawing if there is one close by (<2 mm away).The addition of angular substituents in some polycyclic structures can be done directly with the Bisect button or <alt-B>.A selection of stereogroups can be directly attached with the Extended Bisect Button.Drawing Structures with 3D PerspectivePerspective structures can be drawn by "eye" using the mouse in a free-hand fashion (<Left-Click> to make points, <Right-Click> to draw lines, <Left-Drag> to move points, <Right-Drag> to select groups of points and move them). However, for regular polygons, it is easier and more effective to use Modify to distort a structure to give the appearance of a side-on view, as described below.First draw a normal structure, and convert any double or triple bonds to individual lines by double-clicking the bond to select it, and clicking on the menu item Edit | Make Lines. Then place the structure in MODIFY with a <Mouse-Right-Drag>. First rotate the structure a little, then squash it in the vertical direction (use the buttons in the side menu or the function keys). Bold the "forward" lines by clicking on them, and pressing the appropriate Line Thickness Button..Bisect Extended Button This button drops down an additional group of Bisect- and Y-Split-like command buttons for adding various groups either to the end of a line, or at the intersection of two lines.Bezier Curves PLT can produce Bezier curves of unlimited length for representing smooth continuous lines such as those used for reaction energy profiles or electron pushing arrows. The curves drawn can be solid, dotted or dashed. The solid Bezier curve can have arrows at one or both ends. The dashed Bezier can have an arrow at one end. In addition, the Bezier curve can be filled to produce arbitrary filled shapes with curved edges. The last type, Plain Filled, is not a curve, but the enclosing lines are simply filled with the current line color. It can be used to produce arbitrary filled shapes with straight lines edges.There are two methods of drawing Bezier curves - the step-by-step method and the lasso method.Step by step method. Draw three consecutive lines defining the four Bezier points with <Right-Mouse-Click>, and press the Bezier Button, select the Insert | Bezier menu entry, or press the <ctrl-B> key. Then select from the menu of curve types. The curve can lengthened by drawing one to three additional lines, and then converting to a Bezier curve as above. There must be no intervening steps or points between the original curve and the added steps. You can clear out extraneous moves with <X>. Existing Bezier curves can be changed to a different type by a <Dbl-Click> near a control point (make sure you have found the point with <F9> or <F10>) and clicking the Bezier Button.Lasso Method. This is the best method for drawing a long continuous curve. Draw an outline with <alt-Right-Mouse-Drag>, and press <B> before releasing the mouse button (you can release the <alt> key any time after the drag is started). The curve will be created when you release the right mouse button.The Bezier control points are indicated with small squares, these may be moved at any time with <Left-Mouse-Drag>, the curve will automatically readjust, as in the example above. To color a Bezier curve, click on the last point of the curve or place the entire curve in MODIFY and click on the Color PanelAny Bezier curve can also be changed to another Bezier type using the Bezier button - <Double-Click> near one of the control points. Press <F10> (forward) to move along the line, then select a different Bezier line.Curves in the Insert menuPLT has the capability of drawing several types of Curves. Select items from the Insert menu. There are some differences in the way the curves are drawn:Circle, Lorenzian, Gaussian, Cosine, Ring, Parabola and Sine directly draw a standard curve of the selected shape, which is automatically placed in Modify. The curve can be resized, stretched, rotated, or otherwise manipulated by appropriate use of the editing features of Modify. These curves are added to the PLT drawing as a series of steps (20 steps per curve).Bezier Curve. Before selecting this item draw three contiguous lines which define the Bezier set points (handles). Then press the Bezier button or select Bezier from the Insert menu, and choose one of the types of curves (see Bezier Curves). Bezier curves are added to the drawing as a series of control points.Scale presents a dialog which allows selection of numeric values for various dimensions of a scale with tick marks and numeric labels. Scale is added as a label object.Graph. Selecting this items opens the X, Y- Graph dialog, which allows preparation of X,Y graphs. (There is a simulation feature in the Graph dialog which allows plotting of any function of the form Y = f(x). Graph is added as a label object.NMR Spectrum. Selecting this items opens the NMRSPEC dialog to select an NMR spectrum file for incorporation into PLT. NMR spectra are added as a label object.Image. Selecting this items opens a File Open dialog to select a BMP, GIF, JPG, WMF or EMF file from disk for incorporation into a PLT drawing. Box. This produces a filled Box.Convert Alt-bond to LinesMost lines in a PLT drawing will be single bonds, but others will have a more complex structure, they will be internally represented as modified lines. We refer to these as Alternate Bonds (Alt-Bonds): dotted lines, dashed lines, bold lines, hatched bonds, double bonds, triple bonds, and others. All of the bond and graphics types shown on the MAIN Side Panel start out as Alt-Bonds when they are added to a PLT drawing, and they are initially shown on the screen as a highlighted grouping of lines. For Rings, the initially drawn Alt-Bond is automatically converted to lines when you edit another part of the drawing. However, the various bond types, arrows, brackets and rectangles will remain as Alt-Bonds so that they can be easily moved around, stretched and dragged. The individual components cannot be changed or accessed by the usual editing procedures (such as Mouse-Dragging), only the start and end point of the line can be changed. For example, the two outer lines of a triple bond cannot be directly dragged, erased or otherwise altered. For some purposes it is useful to modify the individual components of an Alt-Bond (for example, while producing perspective drawings, or if you wanted to make one of the lines in a triple bond dashed). For this purpose, a feature is available to convert Alt-Bonds to their individual lines: highlightthe Alt-Bond and then selecting the Edit | Make Lines menu item.It is also possible to prevent the normal Alt-Bond-to-lines conversion for Rings. While the ring is highlighted (“live”) (immediately after selecting it from the Side Panel) select the Edit | Make Lines menu item, and click the No button in the dialog. The ring will still be shown on the screen, but only the original line can be accessed. The ring can now be easily rotated and scaled by dragging the end of controlling line.See: Alternate Bonds and Editing Lines ??Modify - Copy, Cut, Rotate, Move, and MoreThe Modify routine is used to perform a variety of editing functions on a section of a drawing (the Modify Segment), which can be defined by a rectangular Box, by a Lasso operation, or by a structure.Rectangular Box: Use <Right-Mouse-Drag> to select the Modify Segment. To move the select box use <shift-Right-Mouse-Drag> or <shft-Arrow-Keys>. Can also use <M> followed by cursor moves. Lasso Modify: Draw an outline of the selected points with <alt-Right-Mouse-Drag>. Structure Modify: You can select a structure (a closely connected series of lines and labels) by clicking on a point in the structure and pressing <alt-M>. PLT will identify the current structure, and place it in Modify. It does this by finding all points that are close enough to be part of the same structure. If you are editing a TEM file, clicking on a TAG name (such as --Pyridine--) and then pressing <alt-M> will select the TAG structure into Modify. To exit Modify, press <ESC>, do a <Left-Right-Mouse-Click>, or do a <Right-Mouse-Click> and select Exit from the menu.The following operations can be performed on the Modify Segment:?The contents of the box can be arbitrarily moved on the screen with <Left-Mouse-Drag> or <Shift-Curs>.?Perfectly vertical or horizontal dragging when hold down <alt> or <ctrl> key during a <Left-Mouse-Drag>?The Modify segment can be docked to other structures. ?The size of the Modify segment can be changed with the resize buttons or <F-5> and <F-6> or (using the standard increment). ?The graphics can be shrunk and expanded horizontally with <F-3> and <F-4> > or the resize buttons (increment).?The Modify segment can be rotated clockwise or counterclockwise with the resize buttons or <F-7> and <F-8 (Increment).?The Modify segment can be flipped horizontally and vertically with the Switch and Reverse buttons otr <ctrl-S> and <ctrl-R>. ?The line thickness of the graphics lines in the Modify segment can be changed (Line Thickness Buttons). ?The Label parameters (size, bold, italics, color, etc) of all labels in the box can be edited.?The Label Position (First, Middle, Last, Text, Decimal) of all labels in the box can be edited with <Right-Mouse-Click>.?All of the labels can be aligned vertically or horizontally with the Modify Align Labels Button.?All of the points in the segment can be aligned vertically or horizontally (use <Right-Mouse-Click> and select AlignAllVert or AlignAllHoriz from menu).?The contents of the box can be copied to the PLT Clipboard (use Cut copy Paste Buttons or Copy <ctrl-C>, Cut <ctrl-X> and Paste <ctrl-V> keyboard). ?The contents of the box can be copied to the Clipboard as a Windows Metafile (WMF, EMF) or bitmap (BMP) for pasting into other programs (<alt-W> or <alt-D>, click one of the Export Buttons, or select from the File | Export menu).?The contents of the box can be saved to a disk Windows Metafile, GIF file, bitmap (BMP) file or encapsulated PostScript (EPS) file for incorporating into other programs (<alt-W>, <alt-D>, click on one of the Export Buttons, or File | Export menu).?The contents of the box can be saved to the PLT Clipboard (Copy <c-C>, Cut <c-X> and Paste <c-V> operations within PLT).?The contents of the box can be DELeted <E> or <Right-Click>, select from menu.?Everything except the contents of the box can be deleted (Edit | Keep Segment Only menu).?All of the docking labels (\\) in the box can be deleted (Edit | Delete Docking Label menu) or <ctrl-F4>.?The Modify segment can be pasted into a TEM file as a TAG structure (<ctrl-C>, Template | Tembase menu, <ctrl-V>).?If the Modify segment contains NMR spectra, then a <Right-Mouse-Click> brings up a pop-up menu which allows batch changes in all NMR spectra in the Modify Segment.?If the Modify segment is dragged past one of the screen boundaries, then the drawing will scroll, up to the limits of the right and bottom scroll bars.?The boundaries of the Modify box can be converted to a simple rectangle) <Right-Click>, select Make Rectangle.?The boundaries of the Modify box can be converted to a colored Box with colored boundary <Right-Click>, select Make Box.?The boundaries of the Modify box can be converted to a frame <Right-Click>, select Make Frame or Frame Dialog from the popup menu (latter will create the frame and open the frame dialog for modifying the frame.Operations can be carried out separately on the lines and the labels in the Modify Segment. Choose appropriate Label Parameter Buttons or Line Editing Buttons from the Modify Side Panel. The size of the changes is determined by the Modify Increment Parameter. This parameter can be temporarily changed while in Modify by clicking the Inc button and selecting from the popup menu.Switch and Reverse of Modify Segment The <ctrl-S> and <ctrl-R> buttons perform reflections through a plane on the Modify Segment.The Labels in the Modify Segment are not affected by these operations (except to move the point of origin).Docking Structures using ModifyA Docking Label is a label consisting only of two backslash characters ( \\ ). Such a label can be produced as usual with <W>, with the keystroke <ctrl-F3>, or by clicking on the appropriate Quick Label Button (red square). These characters will not be printed, but are used to mark a position (the Docking Point). The point appears on the screen as a small red square. When a docking label is enclosed in a Modify box, then the docking position becomes the "center" of the segment. All rotations, expansions and contractions will occur using this position as pivot (normally the center of the box is the pivot). In addition, clicking the align buttons or the commands <shft-V> and <shft-H> will align the docking position vertically and horizontally with the Docking Target marked by the cross hair. In this way two structures can be accurately aligned or joined. Pressing both cross-hair buttons in sequence, or pressing the <shft-H> and <shft-V> keys will superimpose the Docking Point on the Docking Target, as shown below.Below an actual use of the docking feature in the synthesis of Breynolide. First draw the two pieces, add a docking label on one structure (the tetrahydropyran), and place the crosshairs on the other. Then place the THP in MODIFY, and dock the two pieces. Rotate the THP so it is properly aligned (rotation occurs around the docking label, so the structures stay accurately attached).Modify Line Editing Buttons The lines in the Modify Box can be edited as follows. These buttons will not affect the formatting of labels in the Box.0-127000Decrease the vertical or horizontal dimension of the lines and points in the Modify Segment, or decrease the size by 15%.0238100Increase the vertical or horizontal dimension of the lines and points in the Modify Segment, or increase the size by 15%.0000Rotate the contents of the Modify Box. The rotation will occur around the geometric center of the Modify box, or around a docking label ( \\ ) if presentModify Align Label Buttons 0285800These buttons will align all of the labels in the Modify Segment either horizontally or vertically. They are useful for creating clean rows or columns. Use this carefully. The most recent change can be reversed with Undo. You can also horizontally and vertically align all of the points in the Modify segment by right-clicking and selecting from the menu. Use this to accurately align individual elements (for example, the beginning and end of arrows in a series of equations). Use this carefully – you can destroy a drawing this way.Modify Label Parameter Buttons These buttons can be used to change the label parameters for all labels in the Modify segment. They have the same functions as the Label Parameters in MAIN and in the WRITE dialog.Modify Increment Button 079400Select from the menu to set the fractional change that will be caused by the various Modify buttons. The numbers represent percent of change in size, or degrees for rotations. The Modify increment is always reset to the default value (15) when you exit Modify.Mouse Operation in Modify The following Mouse operations are active on the Drawing Area in MODIFY:<Right-Click> Pop-up menu allows a number of operations: move the Modify Segment to the click position, exit Modify, erase Modify segment, and set label position of all labels in the Modify segment, align all points horizontally or vertically. If there are NMR spectra in the Modify segment, a number of formatting operations can be carried out on all of the contained spectra.<Left-Drag> Hold down the left button and move the mouse. Drag the modify segment Similar to <shift-Cursor> or <shft-Mouse> move.<alt-Left-Drag>Hold down the <alt> key and the left button and move the mouse. Move the Modify Segment in perfectly horizontal direction. <ctrl-Left-Drag>Hold down the <ctrl> key and the left button and move the mouse. Move the Modify Segment in perfectly vertical direction. <Left-Right-Click>Simultaneously click the left and right mouse buttons. Equivalent to <ESC> key - exit from Modify.<Mouse-Wheel>The drawing page can be moved up and down (<Mouse-Wheel>), left and right <alt-Mouse-Wheel> and the screen scale changed (<ctrl-Mouse-Wheel>.Keystrokes in ModifyThe following keystrokes are operative in Modify:<A> <ctrl-A>Save Modify segment.<C>Clear (Refresh) the screen. <alt-C>Clear screen. <ctrl-C>Copy the Modify segment<E>Erases the Modify segment <alt-E>Edit menu.<F> <alt-F>File Menu.<G>Moves the cursor to the cross hairs (Go to). <alt-G>Toggle/set position of cross hairs.<H> <alt-H> Help <shft-H>Align "center" of Modify segment horizontally with cross hairs.<I> <alt-I>Change Modify Increment. <ctrl-I>Make lines in Modify segment normal thickness.<J> <ctrl-J>Make lines in Modify segment thick (bold).<K> <ctrl-K>Make lines in Modify segment thin.<O>Scroll - center drawing at current cursor position.<P>Print Modify segment using current print setup. <alt-P>Options menu. <ctrl-P>Print setup.<R> <ctrl-R> Reverse - Modify segment left/right.<S>Save Modify segment. <ctrl-S>Switch - Modify segment top/bottom.<T>Copy Modify segment to PLT Clipboard. <ctrl-T>Set Text label position for all labels in segment.<U>Undo. <alt-U>Undo<V> <shft-V>Align "center" of Modify segment vertically with cross hairs (docking).<W> <alt-W>Export Modify segment according to first Export Button. <ctrl-W> Export Modify segment according to second Export Button.<X> <ctrl-X>Cut and Copy current selected object.<Z>Toggle between Zoom scale (large) and normal scale. <alt-Z>Zoom menu <ctrl-Z>Toggle between Ctrl-Zoom scale (small) and normal scale.<0>Zero: initialize the value of the X, Y coordinates (when Show Cursor X-Y is turned on).<DEL>Erase Modify segment.<ESC>Exit Modify.<ENTER>Exit Modify.<SHIFT>Cause dragging by mouse or cursor move.<SPACE>Clear lines crossing all labels in Modify segment.<CURS>123,456,789 keys - move drawing cursor<shft-CURS>Move Modify segment</>Toggle Keyboard cursor direction between 30 deg and 60 deg.<!>Switch to ctrl-Zoom (small) scale.<@>Switch to normal scale<#>Switch to Zoom (large) scale.<$>Switch to alt-Zoom (extra-large) scale<+>Change the keyboard cursor by a factor of 3 (e.g., 3 mm to 9 mm).<->Change the keyboard cursor by a factor of 1/3 (e.g., 3 mm to 1 mm).<F1>Context sensitive help. <shft-F1>Add Style = 1 to all labels in Modify segment.<F2> Expand Modify Segment Vertically <shft-F2>Add Style = 2 to all labels in Modify segment.<F3>Squeeze Modify Segment Horizontally <alt-F3>Delete all docking labels in Modify Segment. <shft-F3>Add Style = 3 to all labels in Modify segment.<F4>Expand Modify Segment Horizontally. <shft-F4>Add Style = 4 to all labels in Modify segment.<F5>Decrease size of Modify segment by one Increment. <shft-F5>Add Style = 5 to all labels in Modify segment.<F6>Increase size of Modify segment by one increment <shft-F6>Add Style = 6 to all labels in Modify segment.<F7>Rotate Modify Segment CCW<F8>Rotate Modify segment Clockwise. ----------Keystrokes in MAINMouse OperationsAdding Text to PLT DrawingsText material can be easily typed in PLT using the WRITE dialog, can be added using the Quick Label panel in MAIN, or imported using the Windows Clipboard. The appearance of the text material can be altered in two ways:Label Formatting: changing the color, position, direction, font, character size, or bolding and italicizing of an entire label.Text Formatting: changes within a label, such as super- and subscripts, underline, color, bold, or italicizing part of a label. Adding Text to PLT Drawings ClipBoard Label Position Left, Right and Center Justification Switch and Reverse of Labels Formatting Text Superscripts, Subscripts, Bold, Italic Docking Point Label. Formatting Text with Braces. Special Characters Orbitals Label Formatting Label Parameter Buttons Formatting Labels with Styles Font Selection Editing Colors Cutting Lines which Cross Labels Search and ReplaceThe Write Dialog0-222200Text material and atomic labels can be prepared and edited by entering text in the WRITE dialog, which can be called with the <W> key, or by clicking on the T icon. The text material can then be typed in the normal way. Press the Exit button, or the <Enter> key to return to MAIN. Labels can be long enough for several lines or even paragraphs of text (create a new paragraph with a line break ( {/} for single space break, {//} for a 1.5 line break). PLT will do the word-wrapping as defined by the Line Length Parameter and the Line Spacing Parameter. In WRITE, any of up to 30 prior labels can be recalled from a list which appears when the Prior Labels button is clicked. <Double-click> on the desired label and it will be copied to the edit area. In WRITE, these buttons provide access to all of the characters in the current font, and to the iconic characters of the Symbol Font. In WRITE, the list box opened by clicking on the Favorites button allows access to user-defined labels that may be cumbersome to type, but are frequently used. Clicking on the + button adds the current label to the favorites list. Clicking on – button removes the currently selected label from the Favorites list. <Double-Click> on an entry in the list to add it to the edit area. Edit Menu in WRITE. Has the usual cut, copy and paste items for selected text, and the important function of editing the available font selection (Edit-Font) and the Styles (Edit-Style).Greek, Format, Symbol, Bonds, Groups, Journals Menus in WRITE. These provide access to many of the available special characters and formatting codes provided for creating labels. The right-most menu dialog is user-definable. The default is Journals, a series of blank journal citations. These entries can only be edited or replaced by making changes directly in the PLT71.INI file [User Text] Section. The title is defined by the Menu=Title entry, and the individual items in the menu by a series of 1=Item1, 2= Item2 up to a maximum of 10 items.Selected Text. A number of operations can be performed on selected text in the WRITE dialog (use a <Left-Mouse-Drag> to select text). This includes Copy, Delete and Paste; make Upper or Lower Case (Edit Menu); make Italic or Bold (parameter buttons), change color (Color Panel or Color Button).Quick Label Buttons0271300 A few of the more commonly used labels are directly available in MAIN by clicking on the screen to mark the label position, and then selecting the button marked with the desired label. Click on the small blue arrow to see the larger panel. If the Left/Right sense of the label produced is not as needed, click on the Switch or Reverse buttons. For more complex labels, use the WRITE dialog.Label Parameters PLT has powerful features for formatting text material. Label Parameters can be set globally or locally.???Global values are set in the Options | Label Parameters menu. Changes made here and saved to the INI file will affect all text in all drawings.???Parameters set for individual labels override global ones. They are set in the Labels Side Panel in MAIN or using a similar panel in the WRITE dialog.??Local values for a group of labels can be set by placing the labels in MODIFY and using the Modify Labels Side Panel.???Portions of a label can be formatted: bold, italic, color, superscript, subscript, underline.Formatting Individual LabelsThe buttons on the Main Label Side Panel will be active if a label is currently selected (click on a label to select it). The operations of the buttons varies, but their use is straightforward. The label parameters for the current label are shown on the status bar at the bottom of the screen, e.g., [F H = 4.5 P = 2 > Title]. The current Label Position or align code is given by the first character (F, M, L, T, =, /, ., :). Next are one or more numeric attributes (H = 4.5 means text will be 4.5 mm high if printed at Scale = 1). The actual label is given after the > character.For each parameter, clicking on the X button to the right removes that parameter from the label, and returns it to the global default ("deformats" it).Note that all distances in mm (H, LL and LS) will be scaled according to the Printer Scale Parameter when the drawing is printed, viewed in a Slide Show, saved as an HTML page, or vonverted to BMP, JPG, GIF, WMF, EMF or PostScript image .Label ParametersFor each parameter, clicking on the X button removes that parameter from the label, and returns it to the global default ("deformats" it). Y = 1 Style Parameter. Select the appropriate style from the menu, which shows the current name and definition of each style. Styles can also be added to the current selected label with the number keys - 1-9 and Styles 1-9. Adding the style parameter applies the combination of parameters shown (see Formatting Labels with Styles). Styles can be edited in WRITE using the Edit | Edit-Style menu O = 3 Font Parameter. Select the appropriate font from the menu. The font selected applies to the entire label. The first font (O = 0) is a Graphic Font which does not look as attractive as the Windows True-Type fonts, but which, unlike True-Type fonts, is capable of being distorted horizontally and vertically. Changing Font definitions, or adding additional fonts to the Font menu is done in WRITE using the Edit-Font menu. P = 2, S = 12 Pen Parameter (Bold), Slant Parameter (Italic). P = 2 will convert the current label to Bold, S = 12 will convert it to Italic. Click on the X to remove bold or italic. Portions of a label can be italicized or bolded in the WRITE dialog by selecting text and pressing the [ B ] or [ I ] buttons to change the attributes, or you can also manually add bold or italic by inserting ^I to start and ^i to stop italics, and ^J to start and ^j to stop bold, or these attributes can be selected from the Format menu. Thus [^. Chem.^i ^J1996^j] will print as [. Chem. 1996]. 0-127000C = 12 Color Parameter. Select the desired color from the 15 that are shown. If no color is defined, then Color = 0 (the default color) will be used. The entire label will be colored. Colors are changed in the Options | Edit Colors menu. D = 30 Direction Parameter. This will rotate the baseline of the label. 0-158700B = 1.1 Letter Breadth Parameter: the relative width of the text characters (1 = normal width). Click the buttons to increase or decrease the width of the characters in 15% increments. This parameter works only with fOnt = 0, and is useful mainly to manipulate certain special characters (circle, rectangle, orbitals, etc). 0-349200R = 1.15 Relative Height Parameter. Click the up and down buttons to increase or decrease the relative size of the characters (each click 15%).095300H = 3.6 Letter Height Parameter: the size of a capital N in mm. Type in a new value, or click the + or - buttons, then press the Height mm button. The resulting letter height will be the product of the Height Parameter and the Relative Height Parameter.0222300LL = 175 Line Length Parameter in mm: the word-wrap line length for the current label in mm. Type in a new value, or click the + or - buttons, then press the Line Length button.0-365100LS = 6 Line Spacing Parameter in mm: the word-wrap line separation in mm for the current label. Type in a new value, or click the + or - buttons, then press the Line Space button.Label Position 0206400These buttons in the WRITE dialog (<W>) allow selection of the label position. For each label there is an origin defined by the cursor position at the time the label was created, or last moved on the screen. The label origin can be set by selecting one of the positioning buttons: either at the center of the First character (left justified), in the Middle of the label (centered), the center of the Last character of the label (right justified), or at the location of several characters which may be needed to define a column: /, =, -, or .. An additional choice, Text, is very similar to First, except that the origin position is set a standard character half-width from the front of the label. Use Text position when you are creating a vertical column of labels, since this will result in a smooth left margin.In MAIN, use the Switch and Reverse of Labels buttons to change Label Position (Switch will cycle through First, Middle, Last; Reverse will reverse the logical direction of chemical formulas: e.g. F > NO2 to L > O2N).In MODIFY, use <Right-Click> and select from the menu to change the position of a group of labels. Labels can also be vertically or horizontally aligned in Modify.Label Parameter ButtonsText FormattingStylesLabels Parameters using StylesWhy Use Styles? In order to facilitate fine tuning the formatting of text in multiple drawings (such as those for a paper or a thesis) you are encouraged to employ label Styles to change the appearance of labels. The advantage of using a Style (such as Y = 5, with Style 5 defined as H = 4.0, P = 2) over direct formatting (such as using the Height parameter H = 4.0 and the bold pen P = 2) is that Style 5 can be changed at any time. For example, if the style were changed to H = 5.5 S = 2 italics on) then all of the labels which have Style 5 will also change if the drawing is printed again. On the other hand, if the Height parameter had been set on each label, (rather than a Style) and a different use for the drawing or a different output device required that the Height needed to be changed, then all individual labels would have to be edited. With styles you get consistency in the appearance of each type of label (e.g., heading, compound numbers, numeric labels) and the ability to change all examples of a type of labels. Adding Styles to LabelsIn MAIN click on a label, then click on the Styles button, and select one of the styles displayed. Similarly in the WRITE dialog. Styles 1-9 can be added directly to the current label with the number keys <1> to <9> (not the number-pad keys). Styles 1-6 can also be directly added to the current label (if any) in MAIN with <shft-F1> to <shft-F6> keystrokes. Editing StylesStyles can be edited in the WRITE dialog, Edit-Styles menu. The definitions are stored in the INI file, they are NOT stored in the PLT drawing. So all of your PLT drawings share the same styles, and all will change if you alter a style, Standard StylesSeveral of the styles are predefined, we encourage you to use these in your drawings. Style = 1 (Reagents) is used for the slightly smaller text over reaction arrows, Style = 2 (Compound Number) is used to make bold and slightly larger characters, Style = 3 (Small) is suited for the smaller characters used to label structures with numbers. Style = 4 (Subheading) is used for secondary headings, it also has a special function for HTML Export. Style = 5 (Title) is used for main headings, and also has a special function in some types of HTML export. You may, of course, redefine these styles at any time.Formatting Text – Write DialogThe Write DialogThe WRITE dialog has two buttons, the Charact button and Symbol button for selecting from extended character sets. There is also a menu bar which has the following entries: Edit (Copy, Paste, Cut, Delete, Make-Upper-Case and Make-Lower-Case. These operate on selected text) Greek (Greek Characters) Format (subscripts, superscripts, bold, italics and line break) Symbol (various characters useful in chemical drawings) Bonds (single, double, triple and vertical bonds) Groups (commonly used functional groups) User (a set of predefined labels, can be edited in the INI file. Default is a set of common journal abbreviations). Special Character Bar.A variety of characters useful in chemistry graphics can be directly added to a label in the WRITE dialog using the Special Character Bar.Reserved Characters.Here is how special characters work. There are six reserved characters in PLT labels [ | ~ \ ^ { } ] which are used to achieve the special effects needed for chemical structures. To place these characters themselves in a label, precede them with the special character symbol [ ^ ]. Thus [ ^| ] will print the line separator character.[ | ]Line separator character (ASCII 124). The next character only will be Subscripted. [ ~ ]Tilde. The next character only will be Superscripted. [ ^ ]The next character is interpreted as a Special Character. Thus [^a] prints as Greek alpha, [^b] as Greek beta, [^=] as a triple bond, and over a hundred others, including orbitals, boxes, circles, and markers. The combination [ |^a ] prints as subscript alpha, [ ~^a ] as superscript alpha. Several of these are also used for changing font characteristics: ^I and ^i to start and stop italics, ^J and ^j to start and stop bold, and ^[ and ^] to start and stop underline.[ ^$ ]The character following the [^$] is interpreted as a character from the Symbol font. Use the Symbol button in WRITE to view and incorporate these. [ \ ]Backslash character. Prints as a wide space (equal to the width of a number). This is useful for indenting paragraphs or properly lining up numbers in a column (the labels [F > \\2.1 ], [ F > \20.33 ] and [ F > 200.0 ] will all line up vertically if placed below each other with the set point aligned. Backslash characters can also be used to represent leading and trailing spaces (to indent text, for example). A label consisting only of a double backslash [ \\ ] is used as a Docking Point Label.[ {..} ]Opening and closing Braces. The material between these (..) is interpreted in a special way. For example, the color of text material can be changed in the middle of a label. See Formatting Text with Braces. Formatting LabelsLabel ParametersFormatting Text with BracesPLT uses the braces characters { } to enclose text which has a special meaning for performing several text formatting chores.Forced Line Feed. The characters [ {/} ] will force a line feed at the label position. [ {//} ] will force a larger break (1.5 lines)In-line Color Changes. Color of text can be changed in the middle of text material by enclosing it in color tags, as in the following PLT label:"F > Normal text. {C=9}This will be color 9 (blue).{C} This will be back to normal color."This will print as:Normal text. This will be color 9 (blue). This will be back to normal color.0-31700The color panel can be used to change color of parts of a label. If text is selected, appropriate color code will be automatically added around the selected text (normal text {C=12}red text{C} back to normal). If no text is selected, then the color codes will be placed at the front and back of the label. Of course, you can also add these codes manually."Keto" BracesThe fragments [ {KUXY} ] and [ {KDXY} ] Are used for extending text vertically above and below a character in a label. The K is required to identify the formatting type. The second character can be either U (for Up) or D (for Down). The third character X identifies the connecting group: [ = ] Equal sign: double bond, panels 1 and 2 in the drawing below. [ - ] Dash: single bond, panel 3.[ : ] Colon: for lone pair (a 90 degree rotated colon), panel 5) [ ] SPACE: for no connector (panels 4 and 6). The Y portion can be any standard PLT label such as O, CH|2, CH|3, OPh, or a space, for no group (see panel 5). The group Y is always left-justified. Some examples below:HTML Tags Using BracesIt is possible to incorporate HTML tags into PLT drawings to refine HTML web pages created with PLT. Any material enclosed in braces with the first character "<" will be ignored in the PLT drawing, but will appear in the HTML file created by PLT (e.g. including {<a href="my.gif">Link to pic</a>} in a PLT label will place a link in the HTML document to the GIF file specified (must be present in the local folder). Such material will be invisible in PLT drawings. If you wanted the link text to be visible, you would use: {<a href="my.gif">}Link to pic{</a>}.Comments in PLT LabelsMaterial in braces where the first character is % will be treated as a comment, and will not appear on the screen, and will not be printed: e.g. Label text {%A comment} More text. Comments will, however, be found by the search and replace dialog.Current Date in PLT LabelsThe Format | Date menu in the WRITE dialog allows the current date to be entered. For example, {Date=mm/dd/yy} within a label will print as 07/12/10 (if the current date is July 12, 2018). There are several predefined formats in the menu, but you can edit these if you like, including adding time as well as, or instead of, date codes.dddd ttttThis will give the standard date time in local format (in the US: 12/31/92 6:22:38 PM)m/d/yy8/22/10hh:mm AM/PM07:18 AMyyyy-mm-dd2010-06-12dddd, mmm dd, yyyyFriday, Jun 11, 2010dddd, mmmm dd, yyyyFriday, June 11, 2010Special Characters The character following a caret in PLT labels [ ^ ] is interpreted as a special character. Thus [^a] prints as Greek alpha, [^b] as Greek beta, [^ =] as a triple bond, and almost a hundred others, including orbitals, boxes, circles, and markers. The combination [ |^a ] prints as subscript alpha. Several of these are also used for changing font characteristics: ^I and ^i to start and stop italics, ^J and ^j to start and stop bold, and ^[ and ^] to start and stop underline. The character following [ ^$ ] is printed from the Symbol font ( ^$a prints as ?). Characters in the symbol font can be selected by clicking the Symbol button in Write. Formatting Text with Braces. Docking Point Label. OrbitalsComplete Character TableHere is a complete list of all special characters available in PLT. These will either be simulated with graphics, or selected from the current font or the symbol font.Font SelectionThe base font (typeface) for a PLT label is specified by number, selecting from the Font popup menu. If you change the Font associated with a number, then all of the labels which have that number will be printed using the new font.Editing the Font ListIn the WRITE dialog, select the Edit-Font menu item, and select one of the items 3-14 to edit. A Font Dialog appears. Select the desired Font Name and press OK. Press Cancel to leave the font as currently defined. Note that although you can change font properties such a size, italic, bold in the dialog, these are for previewing the characters only, and have no significance in the font selection process, only the name is significant. The new font list is automatically saved to the INI file. Note also that Font 0 (the Graphics Fonts) cannot be changed, and Fonts 1 and 2 are currently undefined. We recommend keeping the default definitions Font=3 (Arial) and Font=4 (New Times Roman). Formatting Text??OrbitalsUse the Orbital Wizard (menu Insert | Orbital..) to easily create orbitals (p, d, sp3) and related graphics figures like squares, rectangles, triangles, circles and ovals. If you use the wizard, you can safely ignore everything below in this section. See the ORBITAL1.TEM file to directly import a variety of orbitals and related constructions.Technical Details Orbitals are labels using the special characters ^V, ^W, ^X, ^Y and ^Z, as shown below. Rectangles (^B) and triangles (^D) behave similarly. Use Font = 0 for these labels for the best results. All of the editing procedures available for labels can be applied to orbitals: size and breadth can be changed, they can be rotated, colored, etc.The orbitals will be shaded if the symbol ^H precedes the ^V, ^W, ^X, ^Y, ^Z, ^B or ^D :You can reverse the colors (white to black, black to white), with the character ^Q:Finally, the white parts can be made opaque with the character ^N (the white parts are normally transparent). Below some examples of how these properties can be combined. Note that the order (sequence) of steps is important when you are layering opaque objects - the later ones will cover the earlier ones. To move a label on top of others, cut it with <ctrl-X> and paste it back with <ctrl-V>. Shadowed boxes can be prepared by placing an opaque white box on top of, and slightly offset from, a black box. Reversed text can be produced by placing white text (Color = 15) on top of a black box ^Q^H^B). Editing LabelsSelecting LabelsLabels can be selected by clicking on them (the text version of the label will appear on the status line). You can also "find" labels by double-clicking close to (but not on) them, or by clicking close to the label origin and pressing the <shft> or <=> keys.Moving LabelsLabels can be moved by a <Left-Mouse-Drag>, a <shift-Mouse> move, or a <shift-Cursor> move. These moves can be restricted to perfect horizontal by holding down the <alt> key; i.e., an <alt-Left-Mouse-Drag> move, in perfectly vertical direction with a <shft-Left-Mouse-Drag>. Deleting LabelsLabels can be deleted by clicking on them (or selecting them in any other way) and pressing DELete or <E>. Editing Text Content and AppearanceThe appearance of the text can be changed by modifying the Label Parameters in the Main Labels Side Panel. The text of the label can be changed in the WRITE routine. To enter WRITE, Double Click on a label, press <Write> when the cursor is on a label, or click on the T icon. Label Position can be changed with <ctrl-Switch> or <ctrl-Reverse> in MAIN (see Switch and Reverse Buttons).Switch and Reverse of LabelsThe <ctrl-S> and <ctrl-R> buttons perform changes in label position and direction. <Ctrl-S> switches Label Orientation between First, Middle, Last (place cursor on label, press <Ctrl-S>):<ctrl-Revers> switches the logical direction of formulae.Search and Replace TextThe Search and Replace dialog can be accessed from the Edit menu, or with the keystroke <ctrl-F>. You have the choice of searching the current page, or all of the pages in the current document (default). Type the search string, and if desired, a replace string, and click the Find Next button. The search operation is currently not smart - a search for "H2O" will not find "H|2O" and vice versa. The search can be made case sensitive if desired. The Search entry remembers the last 10 searches during the current session.Each match will be highlighted in blue on the main screen. You can then:?continue searching by clicking the Find Next button?click the Replace button to make the change?edit the text of the label and click Replace to change the label.?Click on the main PLT screen and make any changes needed (click on the search dialog to continue the search)Searching and Replacing Label ParametersIt is also possible to do a search of the label parameters which control the formatting of labels. Be sure you know what you are doing before you use this feature - it is possible to severely damage a PLT drawing. The purpose of this feature is to allow easy corrections to be made in the formatting of multiple labels. Let's say you (foolishly) applied specific colors to many labels in a PLT document, say C = 3, C = 6 and C = 8 and no longer like this scheme. I say foolishly because you should probably have been using Styles (Y = 8) for this purpose, then you could simply edit the style, and all of the colors would change. You decide that you would like to change all of the labels with C = 8 to color C = 5. Simply make sure the Search/replace Label Parameters Only box is checked, put C = 8 (one space only on each side of the "=") in the search box and C = 5 in the replace box, and perform the replacements. Alternatively, put C = 8 in the search box and Y = 8 in the replace box to replace the Color number with a Style number. UndoThe individual replace operations cannot be undone, but all of the changes made in one session can be undone after you exit the Search and Replace dialog.Graphics Objects – Boxes, Graphs, NMR Spectra, Scales, Curves In addition to text labels, PLT has several other objects that are handled similar to labels, but are much more complicated structures: Boxes, X-Y Graphs, NMR Spectra, Scales, Images (HIG, BMP, JPG).BoxesA rectangular Box useful for highlighting material in a chemical graphic is available. A Box is an object like graphs or NMR spectra, and can be dragged, resized and edited. When produced it is placed “behind” all other existing objects (at Step = 1 of the drawing) so it does not obscure any existing material. This is because one main use of boxes is to highlight portions of a drawing, as in the graphic below. If you want the box to cover something, copy it to the Clipboard, and paste it into a new location.A Box can be added from the Insert | Box menu, or using MODIFY as described below.The scheme below is from the PLT-generated website: To prepare a Filled Box, place the material in Modify with a <Right-Mouse-Drag>, do a <Right-Click>, and select MakeFilledBox from the pop-up menu. The box can be moved by dragging the left red control point (the material inside will disappear, sorry about that, but a clear <C> will restore it). The box can be resized by clicking on the red control point on the right, and dragging the blue control point. The colors can be edited by a <Double-Click> on the red control point, and entering information about the Box Border Color, Box Fill Color, and Box Options (0.Box only, 1.Fill only, and 2. Box & Fill). The yellow box above has option 2. If you like fancier boxes, you will have to create them yourself, the shadowed box below has a yellow border box with black border on top of a black-filled box.Note that the Filled Box object is distinct from the Box AltBond defined by a diagonal line (outline only), and the Box character ^B (see Orbitals).Unfortunately, Boxes are not completely well behaved - when you drag the Box over other graphics material, it will appear as if lines and labels have been erased - they have not been. Press <C> to redrawn everything. Sorry about that.Graphs A routine for preparing simple X-Y Graphs is included in PLT. The Graph routine is not very sophisticated. Click on the Graph entry in the Insert menu, or press <ctrl-G>. The Graph Dialog shows an empty graph with x and y axes running from 0 to 100. Currently up to 9 sets of up to 100 x-y data points can be graphed (Is this enough? remember, we are not trying to compete with SigmaPlot, SlideWrite or Axxum here).Preparing a Graph 1. Enter the data. Click the Edit Data button (<alt-D>) and type in values in the grid provided. To edit the default names of the X and Y data points, Double-Click on the heading (e.g., x-Set 1, y-Set 1). The graph utility only supports pairs of X,Y-data points. The pairs of points can be freely deleted, new pairs inserted, or points moved up and down by clicking the appropriate buttons. You can also add and delete data sets and import x,y-coordinate data from disk or the clipboard. The latter must be an ASCII text file in the form: x, y, line feed (or x TAB y linefeed: 0.63, 10 0.95, 15 1.35, 20etc, up to 99 pairs of x,y numbers. Data from spreadsheets can also be imported. Copy two adjacent columns from the spreadsheet (Paradox or Excel) representing pairs of X and Y coordinates, click on the dataset where the data should be placed, and press the Paste button or select the Edit | Paste Dataset menu to paste.Datasets can also be copied and pasted from one graph to another. Select a dataset, either in the main graph routine or in the data entry dialog and press the Copy button or select the Edit | Copy Curr Dataset menu.When finished, click the Close Data button. The name of the data set can be typed in the text box at the bottom left of the Graph dialog. Press the Auto Axes button to have PLT determine suitable numeric scales. 2. If desired, set the graph axis limits. Select the Options | Size of Graph menu and adjust the parameters in the dialog. These are the physical dimensions which control the appearance of the graph, and do not have to be adjusted for every graph. Each axis can have two levels of tick marks (Big Ticks and Small Ticks), each big Tick will bear a numeric label. The size and position of the graph can also be adjusted by dragging the red handles at the top right and bottom left corners of the graph image (this can also be done in the Main Dialog)."X Axis Width (mm)"Physical X-dimension in mm"Y Axis Height (mm)"Physical Y-dimension in mm"Big Tick Size (mm)""Small Tick Size (mm)""xSmallTick/bigTick"Number of small divisions between Big Ticks on the X-axis"ySmallTick/bigTick"Number of small divisions between Big Ticks on the Y-axis"First X Tick (mm)" Physical distance (mm) of X-origin from Left Y-axis (dead space, to avoid points falling on the Y-axis)"First Y Tick (mm)" Physical distance (mm) of Y-origin from Bottom X-axis (dead space, to avoid points falling on the X-axis) 3. If the axis labels and limits are not as desired, select the Options | XY Coordinates menu and set the graph units. These are the actual units of the graph data. You can also simply type in the data and click the Auto Axes button to have PLT determine suitable numeric scales."Left x Coord"Graph X origin (left limit) in Graph X-Units (e.g., 0 in the default graph)"Right x Coord"Graph X right limit in Graph X-Units (e.g., 100 in the default graph)"X Tick Separat" Distance between Big Ticks in X-Graph units on the X-Axis"Lower y Coord"Graph Y origin (lower limit) in Y-Graph Units"Upper y Coord"Graph Y upper limit in Y-Graph Units"Y Tick Separat" Distance between Big Ticks in Y-Graph units on the Y-Axis 4. If needed, in the Options | Labelling menu select the desired format of the X and Y numeric axis labels (0.00 means two numbers will be printed behind the decimal point). 5. Set other options in the Options menu (you can suppress printing of any of the captions, as well as the tick marks of either axis). 6. Edit the Title, X and Y Captions. Select the appropriate entry from the Edit menu, or double click on the label. The captions are normal PLT labels with full support for all PLT features. The position of the captions can be adjusted by dragging the labels on the display screen (<Left-Mouse-Drag>). 7. Select the Line type. First select the desired data set in the Select-Data-Set menu, then select the appropriate line type, line width and line color in the Select-Line menu. Select the Line type. The line type Bar graph draws lines from the baseline to the point, instead of connecting the points. 8. Select the Mark type. First select the desired data set in the Select-Data-Set menu, then select the appropriate line type in the Select-Mark menu. These marks are regular PLT labels, which can be edited by selecting the appropriate entry in the Edit menu.Least Squares LinePLT will calculate a least squares line for any data set. Select the Lines | Least Squares On menu item. If you change graph dimensions, or add or change data points you may have to force a recalculation of the line by clicking on Least Squares On twice. The color and line type of the least squares line can be adjusted by clicking on Lines | Least Squares Line menu item. You can also define the end-points of the least squares line by setting Lines | Least Squares Limit for Min-x and Max-x.Editing a Graph in the MAIN PLT Window.To select a graph in MAIN click on the lower-left red square. You can now change the graph size by dragging the upper-right blue square. Clicking on the Label-side-panel increase/decrease buttons will change the height or width of the graph.0-174600If a graph is selected in MAIN then clicking on the Label-side-panel increase/decrease buttons will change the height or width of the graph.Graph ReportClicking the Graph Report button creates a new PLT drawing (default filename Report1.PLT) which contains a table of the essential data in the graph. The table is shown in the Graph window. To edit the drawing containing the report, exit Graph and press <V>.Specialty Graphs: Grade distributionIf you are teacher who gives examinations, you might want to quickly prepare a grade distribution. PLT makes it easy. In your grade spreadsheet copy a column of numbers into the clipboard (highlight the numbers and press <c-C>). Switch to PLT and click on the Insert menu. There should be an item Make Graph from clipboard list. Click on that, enter the maximum score (default is 100), and press OK. PLT instantly creates a simple bar graph of the scores in your exam, and calculates the average for you. Mass Spectra can be included within PLT as a graph.Graph SimulationsIn addition to graphing X,Y-data points, the PLT Graph routine can produce simulations of equations of the form y = f(x). A graph can have up to 10 simulations (in addition to 10 sets of X,Y-data points). To create or edit a simulation, select the appropriate entry in the Lines | Simulation menu. The dialog has a text box area to type the equation, and six text boxes to enter values of up to six named variables.The Simulation EquationThere are certain syntax rules that must be followed so PLT can correctly interpret the equation to be simulated. ?The variables (Var1, Var2 ...) can be renamed by clicking on them.?The independent variable x must be enclosed in parentheses: e.g.; y = 2*(x) + 6.5. If a function is being used, there must be a separate set of parentheses for the function argument: e.g.: y = log((x)) + sin((x))?The calculation variables (default names: Var1, Var2, Var3) must also be enclosed in parentheses: e.g., for the equation above variables could be used as follows: y = (Var1)*(x) + (Var2). You could then define Var1 = 2 and Var2 = 6.5. The reason to use variables is so that the numeric values in the equation can be easily changed without having to retype the equation (especially valuable if the number appears several times in the equation). You can change the names of the variables by clicking on the variable name or using the Variables menu, and typing in any non-reserved, non-numeric name. If a variable is the argument of a function, there must be a separate set of parentheses for the function argument: e.g.: y = tan((Var2)) + cos((Var1))?The variables can themselves be algebraic expressions, but they must not contain variable names later than themselves (e.g. Var3 = 3*(Var1) + (Var2) is OK, but Var3 = 3*(Var5) is not)?The following mathematical functions are supported: ABS, ATN, COS, EXP, FIX, INT, LOG, RND, SGN, SIN, SQR, and TAN (arguments of trigonometric functions must be in radians). The constant (pi) is supported.?The following mathematical operations are supported: Exponentiation: ^, Unary minus: -, Multiplication: *, division: /, Integer division: \, Integer modulus: MOD, Addition: +, Subtraction: -, Relational operators: =, <>, <, >, <=, >=, NOT, AND, OR, XOR, EQV, IMP.Presentation of the SimulationYou can set the number of points that PLT should use in the simulation (default is 50) in the NumSteps menu (maximum of 800). You should use the smallest number of points needed to properly represent the function, since a large number of steps will reduce the speed of screen redrawing, and increase the size of PLT files.You can set the line type and color in the Select Line menuYou can have the simulation run the width of the graph, or you can specify the left and right limits (to avoid math errors like division by zero or square root of a negative number).ExamplesDecaying Sine Wave (FID): The equation below will draw a decaying sine wave, using the default axes of x = 0 to 100 and y = 0 to 100 (note that x must be in parenthesis):y = 50 + 45*sin(1.5*(x))*exp(-.07*(x))Two superimposed sine waves (two frequency free induction decay):y = 50 + 15*sin(2.5*(x))*exp(-.04*(x)) + 25*sin(.3*(x))*exp(-.04*(x))If you want to easily vary the decay rate, use the following:y = 50 + 45*sin(1.5*(x))*exp((Var1)*(x))Now all you have to do to adjust the curve is change the value of Var1.First Order Rates: A ----> B The numeric values of A and B (Ao, Bo, Ainf, Binf) can be any quantity whose value is proportional to the concentration of A and B.First order increase of product B (y), x = time. Set Var1 = k1, Var2 = Binf (Infinity point of product), Var3 = Bo (initial amount of product). y = (Binf) - ((Binf) - (Bo))*exp(-(k1)*(x)) First order decrease of starting material A (y), x = time. Set Var1 = k1, Var2 = Ainf (Infinity point), Var3 = Ao (initial amount of starting material). y = ((Ao)-(Ainf))*exp(-(k1)*(x)) – (Ainf) NMR Spectra in PLT A routine for incorporating NMR spectra or sections of NMR spectra within PLT drawings is included in WINPLT. Spectra are handled similarly to Graphs or Images as single-step labels whose position on the screen is indicated by a handle marker. PLT cannot do a Fourier Transformation on FIDs, it can only handle spectra produced by NMR workup or simulation programs.PLT can use NMR spectra from several sources:?the NUTS format produced by the NUTS NMR workup program (). The NUTS program can be used to FT all types of spectra.?the LYBRICS format produced by the NMR workup program "PCNMR for Windows" which is published by JCE: Software. This program reads Brucker and Varian FIDs, and produces FT'd spectra in a format (LYBRICS) such that they can be read into PLT. Bemis, J. M. "PCNMR for Windows" J. Chem. Ed.: Software, 1994, Special Issue 7.?the NMR simulation program WINDNMR can produce simulated NMR spectra that can be copied to PLT (in WINDNMR, select the Export | Copy PLT to Clipboard menu).?PLT can read the disk or clipboard metafiles produced by the Aldrich Spectral Library database of proton and carbon NMR spectra.?PLT can also "trace" NMR spectra from scanned hard copy. Incorporating a SpectrumTo prepare a spectrum for use by PLT you must FT the FID, and save the spectrum using NUTS or PCNMR for Windows. Click the NMR Spectrum entry in the Insert menu (or click the NMR button) to bring up the NMRSpec dialog, and a "File Load" dialog. Load a spectrum (I encourage using the extension SPC for such files). The NMRSpec dialog has two panes. The bottom one shows the full spectrum, with one area shaded yellow. An expanded version of the yellow section is shown in the top pane. It is the portion of the spectrum in the upper pane that will be incorporated into the PLT drawing You can drag anywhere on the lower pane to move the selected section, or drag the right or left edge of the yellow area to change the size of the selected section. There are also a number of buttons, menu options and text input boxes for further manipulations. Editing the SpectrumIn the NMR Edit dialog the currently selected spectrum is shown on the screen with four red squares (handles) which can be dragged (only two or three may be visible if the Box and/or Scale display is suppressed in the Options menu). The lower left and upper left one determine the size of the enclosing box, which can be visible or invisible, and the position of the scale axis (this enclosing box, whether visible or not, is also the clipping box for section expansions and integrations). The inside lower left handle determines the position of the spectrum in the drawing (it is also visible in the actual PLT drawing), and the inside upper right one determines the size and shape of the spectrum on the screen or page (think of it as the top/left corner of the enclosing rectangle of the spectrum).The Blue Up/Down arrows in the upper pane determine the vertical expansion of the spectrum. The Blue Left/Right arrows in the upper pane change the horizontal position of the selected spectrum (same as dragging on the lower pane). The Horizontal double arrows change the spectrum width in Hz (they are deactivated when one of the "ppm/Hz per cm" buttons is selected). There is a second set of smaller up/down/left/right/wider/narrower arrows and red x to the right of the larger ones. These are for manipulating integrals and section expansions. The size of the increment for these buttons is determined by the button with 100%/10%/1% in it (click the button to cycle through the percentage values).The Options menu has a number of adjustments, including how much information to display on the spectrum -- the enclosing box, the Hz/ppm scale, and the text labels can be suppressed.Fixing SpectraSpectra with a raised or lowered baseline, or with a slanted baseline, can be repaired in the NMRSpec dialog. Use the Raise baseline, Lower baseline, Tilt baseline Left or Tilt baseline Right items in the Edit menu, or the <ctrl-U>, <ctrl-D>, <ctrl-.L> or <ctrl-R> keys. There is also a Flip spectrum vertically menu item should you wish to create an upside-down spectrum (for example, perhaps you might with to peak pick a negative signal in a spectrum).Auto Axes ButtonThe creation of an appropriate Hz or ppm scale can be automatically handled by PLT. Often when working with a new spectrum, or a different expansion of an existing spectrum the ppm scale may be too sparse or too dense (overlapping numbers). Click the Auto Axes button and PLT will attempt to find a pleasing set of axis tick marks. If you don't like the result, you can customize the appearance of the scale. Go into the Options | Size of Spectrum menu and make changes there. For example, the tick interval, size of the tick marks, or number of small ticks per big tick can be changed. A number of other parameters can also be changed numerically. The values set in the options dialog are frozen unless you click Auto Axes again, or the scale becomes so unreasonable that an automatic "Auto Axes" adjustment is triggered (this will happen, for example, if you switch from ppm to Hz scale, which requires very different numeric values for the axes labels.Setting a ReferencePerform a <Right-Mouse-Drag> across a reference peak in the upper pane. Select SetReference from the pop-up menu. A dialog will appear. Type in the desired Hz/ppm value for that peak, and the scale will be adjusted accordingly.Creating a Section ExpansionA Section is a vertical and/or horizontal expansion of a portion of the NMR spectrum. To create a section perform a <Right-Mouse-Drag> defining the width of the area to be expanded, and the desired height of the peaks. Select Section (automatically uses 10 Hz/cm, or whatever value was used last) or SectionHz/cm (specify Hz/cm for each section) from the pop-up menu. Type in the Hz/cm value for the section expansion, and a section will be produced. You can drag the blue square to position the section, and click on the small blue up/down/left/right/wider/narrower buttons to change the vertical height of the current section, the position of the peaks within the section, and the width of the section. The section will be clipped by the enclosing spectrum box. 171450-111100The Section menu has a number of options for manipulating the current section (select by clicking on the red square, it will turn blue) including Delete Section (you can also click the red X to delete the current section), set scale options, and select line thickness, line type and line color. You can also provide numeric values for section width and position using the Set Section Width and Set Right Limit options in the Section menu. Once you have formatted one section to your taste, you can apply the parameters to all other sections in the spectrum by selecting the Apply Format to All menu item.The current section can also be converted to an independent spectrum by selecting the Convert Section to Spectrum entry in the Section menu. This allows the section to be manipulated like a full spectrum - it can be moved outside the spectrum box or copied to another drawing, the section can be integrated or peak-picked, etc. The Section itself will disappear when you do this.Integrating a SpectrumPerform a <Right-Mouse-Drag> defining the width of the area to be integrated, the vertical position, and the desired height of the integral (if it is the first integration). The Mouse drag can be either right-to-left or left-to-right, choose a direction that provides the best flat baseline at the start of the drag. Select Integrate from the pop-up menu. An integral will be produced. The Integration menu has a number of options for manipulating the current integral (select by clicking on the red square, it will turn blue) including Delete Integral, Normalize Integral (set numeric scaling value) and select line thickness, line type and line color (same for all integrals). You can drag the blue square up and down to position the integral. 173182329000Click on the small blue up-arrow and down-arrow buttons to change the vertical height of all the integrals, or on the red X to delete the currently selected one. The integral will be clipped by the spectrum enclosing box. Peak PickingPerform a <Right-Mouse-Drag> defining the width of the area to be peak-picked. The bottom of the rectangle defines the vertical cutoff for the selected peaks. Do a <Right-Mouse-Click> and select from the menu: Peak Pick Hz, Peak Pick PPM, or Delete Peak Pick.Scale to Fit or ppm/Hz per cm ButtonsIf the Scale to fit radio button is selected then the Hz or ppm range of the selected area will be constant, and changes in the Width of the spectrum box will result in changing the horizontal scale of the spectrum. If either the ppm per cm or Hz per cm buttons are selected, then the horizontal scale will be fixed (a given number of Hz per cm) and the portion of the spectrum selected (the Hz range) will be changed as the box size is changed.Text Labeling of SpectraEach spectrum can contain up to three labels (their default names are Title, Filename and ID Name). When you import a spectrum from disk, the Filename is placed in the label on the left side of the spectrum, an identification string and the full path is placed in the Title position (centered above the spectrum), and, for NUTS spectra, any comments are placed in the label on the right side of the spectrum. The three labels can be edited, (Double Click on them or use the Edit menu) and placed anywhere on the spectrum (<Left-Mouse-Drag>). The "sweet spot" for dragging the labels is at the left end of the label for Filename, center of the label for Title, and Right side of the label for ID Name.You can hide any of the labels by unchecking the appropriate entry in the Options menu.Of course, it is often more convenient to label spectra in the MAIN PLT dialog, although such labels will not be "attached" to the NMR spectrum.Preparing a Stacked PlotIf you wish to create a stack of spectra, first adjust the size, position and frequency/ppm range for the first (bottom one). Also set the items in the Options menu appropriately. Then, while still in the NMRSpec dialog, press the Add to Spectrum button, type in the value of the vertical offset (can be negative), and select a new filename in the Open dialog. The Next Spec and Prev Spec buttons allow you to edit the individual spectra of a stacked plot without leaving the NMR Dialog. Placing the NMR Spectrum in a PLT DrawingPress OK to import the spectrum into your PLT drawing. Note that when you first cut out a section of an NMR spectrum, only the portion in the upper pane is saved. You can subsequently make the region shown narrower, but you cannot widen it beyond the initial selection unless you reimport the data from the original NMR spectrum by clicking the Load Spectrum button.Editing a Spectrum in the MAIN PLT Window.There are a number of operations that can be done on a spectrum in the MAIN PLT editing window. The red handle can be dragged to change the position of the spectrum (make sure the Show Handles entry in the Main Options menu is checked). When you have clicked on the red handle, a blue handle appears on the upper right of the spectrum box, this can also be dragged to change the vertical and horizontal dimensions of the spectrum. Clicking on the Label-side-panel increase/decrease buttons will change the height or width of the spectrum.Double-Click on the red handle to edit the NMR spectrum. A right click on the spectrum handle in the MAIN PLT window gives a pop-up menu, with a number of options for making changes to the spectrum, including: Clip NMR-Left and Clip NMR Right (these will clip the viewing window of the NMR spectrum at the position of the cross hairs); NMR-Expand Full (show full spectrum); Change Spect Wd, Change Spect Ht and Change Both Wd Ht (give percentage change, + or -, to alter the spectrum width and/or height); Set Line Width and Set Line Color (change the line style of the spectrum by selecting from a second pop-up menu); Clear NMR Toggle and Set NMR Toggle (set or cancel individual properties by selecting from a second pop-up menu); Set Hz Per cm.Editing a Group of Spectra in MODIFY.You can place a whole stack of NMR spectra in a Modify box (use <Right-Mouse-Drag> to select the spectra. A <Right-Mouse-Click>) will then produce a pop-up menu with a number of useful items. You can change all of the selected spectra en masse by selecting from the pop-up menu. The Clip-NMR-Right and Clip-NMR-Left entries will allow you to trim the left or right side of the group of spectra, but these will work only if you have the crosshairs on. Clipping the spectra leaves Hz/cm unchanged.The popup menu also has the entries Set Line Width and Set Line Color. Selecting these will change the linewidth or line color of all of the spectra in the Modify segment.You can also change the height and width of the NMR spectra en masse by selecting ChangeSpectWd or ChangeSpectHt from the menu and entering a percentage (+100 doubles the size, -100 halves it) in the dialog. Note that if you change the width of the spectra the "Hz/cm" setting will also be changed. 171450285800The height or width of all the spectra in MODIFY can also be changed by clicking on the Label-side-panel increase/decrease buttons.Tracing NMR SpectraHard copy (printed or plotted) NMR spectra can be traced with the NMR module in PLT. First produce a high resolution (300 DPI is good) black and white (bi-level) scan of the NMR spectrum in BMP or GIF format. Because of their compact size, GIF files are recommended. It is useful to trim the bitmap to the essential parts, as this speeds up processing of the data. In order to allow accurate addition of scale markings, the bitmap file should also show a ppm or Hz scale, or you must accurately know the chemical shifts of two peaks, or of the left and right end points of the spectrum. In PLT, select Trace Bitmap NMR from the Insert menu. Open the BMP or GIF file. You will first get a dialog which asks for the spectrometer frequency. Set this value. You will now see a scrollable window which contains the bitmap. There are four steps to tracing the spectrum: (1) set left and right limits, (2) set top and bottom limits, (3) set scale positions, and (4) trace the spectrum. In addition to this, you can also edit the bitmap and the final spectrum, if needed.Set Bitmap ResolutionType in the correct bitmap resolution, in DPI (e.g., 300). This will ensure that the NMR dimensions are the same in PLT and hard copy.Set Left and Right LimitsThe Lft/Right option button should be selected. Scroll the bitmap window so you can see the left edge of the spectrum, and do a <Left-Mouse-Click> on it. This marks both the left end of the spectrum and the vertical position where the tracing process will begin. Next scroll so you can see the right edge of the spectrum and do a <Right-Mouse-Click> on it to mark the right end of the spectrum.Set Top and Bottom LimitsClick the Max-Min option button and use a <Left-Mouse-Click> to mark the bottom limit of the trace, and a <Right-Mouse-Click> to mark the upper limit (above the highest peak to be traced). Click on the OK Check Box when top and bottom is properly marked. A yellow rectangle will mark the selected region.Set Scale PositionsClick the Set Scale option button, if it is not already set. Make sure that the Hz / ppm button is selected correctly, depending on the scale you will be using. Do a <Right-Mouse-Click> on a position with a known chemical shift on the right side of the spectrum (a scale marking is most accurate, but you can also use a peak with a known chemical shift). Type in the value of the chemical shift in the Input Box. Next use a <Left-Mouse-Click> to similarly set a position near the left end of the spectrum. Click on the OK Check Box.Tracing the SpectrumIf there are any lines crossing the spectrum trace of interest, or if there are substantial gaps in the spectrum, you must edit the bitmap to remove the interference. Note that the trace follows the upper surface of the line, so any crossing line must be broken above the line. Click the Edit Bitmap option button, and use <Left-Mouse-Drag> to draw on the bitmap and <Right-Mouse-Drag> to erase single pixels. If you hold down the <ctrl> key while dragging the mouse, a wider "brush" is used. At any point you can click the Trace Spectrum command button to trace the spectrum. A red line will show the spectrum as it was traced. If there were errors in the trace due to imperfections in the spectrum, you will have to perform additional editing until a smooth trace is obtained. Then click the Add to Drawing button.If the bitmap contains a set of stacked spectra all with the same scale, you do not have to set the scale for each one, simply set the left, right, top and bottom limits, click the OK buttons, and trace the next spectrum.NMR SpecEdit - Editing a SpectrumIf there are imperfections in the trace that cannot easily be repaired by editing the bitmap, then it may be necessary to edit the traced spectrum itself. Click the Edit Spectrum option button to open the NMR SpecEdit dialog. Click on the spectrum to mark a position. You can move the cursor horizontally with the <Left> and <Right> cursor keys, and the current point up or down with the <Up> and <Down> cursor keys. Larger up and down movements are achieved with <ctrl+Up> and <ctrl+Down> key combinations, smaller movements are achieved with <alt+Up> and <alt+Down> key combinations.More extensive changes can be made by selecting a rectangle with a <Right-Mouse-Drag> operation. Now you can move the contents of the rectangle up, down, left or right with the cursor keys. The vertical size of the material in the enclosing box can be changed proportionally with <G> and <S> (Greater and Smaller). Larger and smaller increments are obtained with <ctrl+G> <ctrl+S> and <alt+G>, <alt+S>. Press <C> to clear the screen. You can correct a baseline drift in the trace with the <ctrl+L> and <ctrl-R> keys to tilt the spectrum baseline to the left or right. Use <ctrl+B> to show/hide the current baseline. The baseline can be moved up or down with <ctrl+U> and <ctrl+D>. Press <ctrl+F> to fix the baseline position (zero pixels offset).When done with editing, click the Add to Drawing button. The bitmap window will appear again and you can trace another spectrum on the same bitmap, if desired. Note that any changes made during the "Edit Bitmap" process have disappeared. In this way even stacked spectra that cross each other can be individually traced.Operations and Commands in Spectrum Edit Routine:<ctrl-B> Show Baseline (toggle)<ctrl-F> Fix baseline (set baseline offset to zero (first 10 points = 0)<ctrl-U> <ctrl-D> Move baseline up or down<ctrl-L> <ctrl-R> Tilt baseline 1 degree left (ccw) or right (cw)<Left-Click> Set crosshairs, the commands below allow the point in the spectrum at the crosshairs to be moved vertically <Key-Up> <Key-Down> Move current point up, down <ctrl-Key-Up>, <ctrl-Key-Down> Move point up or down large increment <alt-Key-Up>, <alt-Key-Down> Move point up or down mini increment <Key-Left> <Key-Right> Move cursor along points in spectrum<Right-Mouse-Drag> Draw an enclosing rectangular box. The following commands operate on the portion of the spectrum enclosed by the box:<G>, <S> Make contents of box Greater or Smaller proportionally 2%.<ctrl-G>, <ctrl-S> Bigger or Smaller 10%<alt-G>, <alt-S> Bigger or Smaller 0.5%<Key-Up>, <Key-Down> Move all points in box up or down<ctrl-Key-Up>, <ctrl-Key-Down> Move up or down large increment<alt-Key-Up>, <alt-Key-Down> Move up or down mini increment<Key-Left>, <Key-Right> Move contents of box left and right (CAREFUL: this destroys data)<Right-Click> Menu, including helpNMR Spectra from the Aldrich Spectral CollectionPLT can import NMR spectra from the Aldrich Spectral Collection (ASC). Proceed as follows:?Select an NMR spectrum. DO NOT turn on the integration or peak pick routine, or the capture will not work.?Select a region of the spectrum. For example, using a <Left-Mouse-Drag> in ASV draw a box from slightly to the right of 0 ppm up to the left of 10 ppm for a full proton NMR spectrum. ?Click the Copy spectrum icon in ASC, make sure the Destination-Clipboard and Picture Type-Metafile boxes are checked.?Click OK to copy the metafile to the clipboard.?Switch to PLT and press <ctrl-V> to paste the spectrum. You will probably have to go into the NMR Spec dialog by double-clicking on the red handle at the lower left of the spectrum to make some changes to get a good-looking spectrum (e.g., click on the Autoaxes button to get a proper scale, make changes in the Options menu, etc).?These spectra do not have sufficient resolution for high quality section expansions, so these should be imported separately. Return to the ASC, frame individual multiplets in the spectrum with a <Left-Mouse-Drag>, and import them into PLT as above. The spectrum below was imported into PLT as three separate items, the full spectrum and the two expansions, and then exported as a WMF file for inclusion in this help document.WINDNMRWinDNMR is a program for the simulation of a variety of NMR patterns. Any of the spectral parameters (chemical shifts, couplings, linewidth, vertical and horizontal expansion, etc.) can be easily and smoothly modified, with instant display of the calculated spectrum. The simulated spectra can be compared on-screen with actual NMR spectra.Both simulations and spectra can be printed, or exported to other programs via the clipboard or as files. WinDNMR will simulate the following patterns: ?AB, AB2, ABX, ABX3, AA'BB', AA'XX' patterns?3-Spin to 7-Spin coupled spin systems?First Order Multiplets of a nucleus coupled to others (e.g., the "A" part of A M3X4 or A MXY4 patterns).?Up to 9-Singlets, or 10-Multiplets (s, d, t, q, etc.).?Full line shape calculations of Dynamic NMR (DNMR) line shapes of 2 exchanging singlets (2-Spin coupled or uncoupled), 3-6 exchanging singlets, and 2 pairs of 2-spin systems. Any of the spectral parameters (chemical shifts, couplings, linewidth, vertical and horizontal expansion, etc) can be easily modified in a variety of ways: by typing in a number; by adding or subtracting increments; or by smoothly moving the number up or down with a spin bar.Up to 15 simulations can be saved and restored for efficient lecture presentation. Actual spectra cannot be saved.DisplaySimulated spectra can be displayed in stick form or as Lorenzian lines. Only actual spectra or simulations with Lorenzian lineshape can be printed.NMR SpectraSpectra produced with NUTS or with PCNMR for Windows (J. Chem. Ed.: Software, Special Issue 7, 1994) can be loaded, displayed, and printed. The spectra must have been Fourier transformed by PCNMR for Windows (WinDNMR cannot work with FID's).Line Shape FittingAny of the simulations can be performed while a spectrum is displayed on the screen for accurate estimation of NMR parameters.Difference spectra (Spectrum - Simulation) can be displayed. This is useful for accurate Dynamic NMR line shape fitting.Output Spectra, simulations and/or difference spectra can be printed on any standard Windows output device. The user can control what appears in the printout (see Printing). Spectra, simulation, and/or difference spectra can be copied to the Clipboard as Windows Metafiles (EMF, WMF) for transfer to other programs (including PLT) as scalable graphics images. They can also be exported as EMF, GIF, BMP or EPS files.Spectra and simulation can be copied to PLT, a chemical drawing program, for further processing, labelling, etc.IR SpectraPLT has the capability of reading Infrared Spectra downloaded from the NIST WebBook site in JCAMP-DX format (). Locate the spectrum in the NIST Chemistry WebBook, and navigate to the page for a specific compound. Go to the section "Information on this page:" and click on "Infrared Spectrum." The next page will show a spectrum, below it a section called "Additional Data" which should have a link to "Download spectrum in JCAMP-DX format." Click on this link. You should get a page like the one below (without the colors) or an option to downlad the file (download to NOTEPAD, for example):##TITLE=2-Methylcyclohexanone##JCAMP-DX=4.24##DATA TYPE=INFRARED SPECTRUM##ORIGIN=NIST Mass Spectrometry Data Center##OWNER=NIST Standard Reference Data ProgramCollection (C) 2009 copyright by the U.S. Secretary of Commerceon behalf of the United States of America. All rights reserved.##CAS REGISTRY NO=583-60-8##MOLFORM=C 7 H 12 O##$NIST SOURCE=MSDC-IR##SPECTROMETER/DATA SYSTEM=HP-GC/MS/IRD##INSTRUMENT PARAMETERS=GRATING CHANGES AT 3000, 2000, 1200 CM^-^1##STATE=gas##XUNITS=1/CM##YUNITS=ABSORBANCE##XFACTOR=1.0##YFACTOR=0.000001600##DELTAX=4.0##FIRSTX=550.0##LASTX=3846.0##FIRSTY=0.000051##MAXX=3846##MINX=550##MAXY=0.016##MINY=0##NPOINTS=825##XYDATA=(X++(Y..Y))550.0 32 51 20 41 131 177 138 97 102 82590.0 68 59 28 29 30 36 47 23 28 16........... (more data lines)----3790.0 52 51 48 29 20 19 17 27 30 283830.0 24 12 18 42 34##END=Note: some JCAMP spectra will appear as a single long line (no carriage returns) when displayed in Notepad. These will also work fine.Copy this data completely to the clipboard (Select All, <ctrl-C>), and paste it into PLT with <ctrl-V>. If PLT recognizes the data as a properly formatted JCAMP-DX infrared file (the file is initially recognized by the presence of the red phrases, which must be exactly as shown), it will parse the data in the ##XYDATA=(X++(Y..Y)) .... ##END= section (both phrases must be present). It will use the data to create an Infrared spectrum, which will be added to your drawing at the current cursor position. The lines in blue are read by PLT. The spectrum is actually a modified NMR spectrum, which can be handled the same as any NMR spectrum within PLT, however, the following limitations apply:Tansmittence vs. Absorbance. If the IR spectrum is plotted as Absorbance (positive) you will be given the option to convert it to Transmittance during the import process. You can also switch between Transmittance and Absorbance at any time with the NMRSpec dialog Edit/Flip spectrum vertically menu item. You must not change the Hz / ppm radio buttons, or you will replace the cm-1 axis label by ppm or Hz, and will not be able to return to cm-1.Peak Picking: if the IR spectrum is plotted as Transmittance (negative peaks) the peak picking routine will not work properly, as it currently is not able to pick negative peaks. Absorbance spectra (positive peaks) will work as for NMR spectra. If you need to peak-pick a transmittance spectrum, you can temporarily invert the spectrum (NMRSpec dialog, menu Edit/Flip spectrum vertically), do the peak picking, and then flip the spectrum back.Scaling: for transmittance spectra, changing vertical scale may be complicated. Remember that in tthe NMRSPEC edit dialog the baseline can be moved up and down with <ctrl-U> and <ctrl-D>. Please contact the Author if files of this type are not read properly. Include a copy of the JCAMP data. In particular, it is likely that not all JCAMP-DX Infrared Spectrum files in the NIST database will have the same format, and so may not be recognized by PLT (e.g. the Version number may be other than 4.24). MASS spectraPLT has the capability of reading Mass Spectra downloaded from the NIST WebBook site in JCAMP-DX format (). Locate the spectrum in the NIST Chemistry WebBook, and navigate to the page for a specific compound. Go to the section "Information on this page:" and click on "Mass Spectrum." The next page will show a spectrum, below it a section called "Additional Data" which should have a link to "Download spectrum in JCAMP-DX format." Click on this link. You should get a page like the one below (without the colors):##TITLE=3-Heptanone##JCAMP-DX=4.24##DATA TYPE=MASS SPECTRUM##OWNER=NIST Mass Spectrometry Data CenterCollection (C) 2008 copyright by the U.S. Secretary of Commerceon behalf of the United States of America. All rights reserved.##CAS REGISTRY NO=106-35-4##$NIST MASS SPEC NO=1766##MOLFORM=C7H14O##MW=114##$NIST SOURCE=MSDC##XUNITS=M/Z##YUNITS=RELATIVE ABUNDANCE##XFACTOR=1##YFACTOR=1##FIRSTX=13##LASTX=116##FIRSTY=20##MAXX=116##MINX=13##MAXY=9999##MINY=10##NPOINTS=66##PEAK TABLE=(XY..XY)13,20 14,80 15,310 16,1018,10 19,10 25,10 26,701.......... (missing lines).....115,120 116,10##END=Copy this data completely to the clipboard, and paste it into PLT with <ctrl-V>. If PLT recognizes the data as a properly formatted JCAMP-DX file (the file is initially recognized by the presence of the red phrases, which must be exactly as shown), it will parse the data in the ##PEAK TABLE=(XY..XY) .... ##END= section (both phrases must be present). It will use the data to create a graph of the Mass spectrum, which will be added to your drawing at the current cursor position. The lines in blue are read by PLT. Intensities are normalized to 100 for the most intense peak. This graph can be handled the same as any graph within PLT, however, the following limitations apply:You must not change the Line Type (No line, Solid, Hatched, Dotted, Dashed) in the Select line menu (if you do, the object will become a normal graph (connect the dots), not a bar graph)You can, however, change the Line thickness or Line color items in the Select line menu Don't add additional data setsKeep the vertical (y) axis lower limit at 0, since the vartical bars will always start at the 0 positionThere is an arbitrary limit of 500 peaks in the Mass Spectrum. If there are more than 500 peaks the graph will not be createdPlease contact the Author if files of this type are not read properly. Include a copy of the JCAMP data. In particular, it is possible that not all JCAMP-DX Mass Spec files in the NIST database will have the same format, and so may not be recognized by PLT (e.g. the Version number 4.24). Scale in Insert MenuA scale-drawing routine (using parameters similar to those used for setting axis properties in the Graph routine) is available. This allows production of a fully labelled scale of any size, with two levels of tick marks. A scale is an object like graphs or NMR spectra, and can be dragged, resized and edited.The parameters for the illustration below are listed here:X-Axis Width (mm):205 Physical length of the X-axisBig Tick Size (mm):3Tick height in mm (can be negative to reverse ticks)Small Tick Size(mm)1.5Small Tick Height in mm.Small Ticks per Big Tick:5 Number of minor divisions per major divisionLeft x-Coord:-10.0Left coordinate in scale unitsFirst X Tick (mm):5Distance of first tick mark from left end of scaleX-Tick Separation:10Distance between big tick marks in scale unitsX-Tick Separation (mm):20Distance between big tick marks in mmFormatting String (x):Formatting to use for the numeric labels at each big tick markScale Axis Direction:Horiz-X or Vert-Y Scale mm to Printer:This toggle will determine whether all physical distances (in mm) specified in the scale parameters (such as length of X-axis, tick height, or mm distance between tick marks) are unscaled, or scaled to paper dimensions when printed at the current Printer Scale.To prepare a scale select from the Insert | Scale menu and edit the parameter values in the dialog. This example has: Scale Axis Direction = Horiz-X .Use the Scale mm to Printer toggle to define whether distances in mm refer to unscaled or print-scale (paper) dimensions.Frame ObjectA rectangular portion of a drawing can be permanently marked by a Frame, so that one or a series of WMF, GIF, EPS or other images can be created and re-created reproducibly. Frames are also used to mark drawings for HTML export, and for Frame-based slide shows. Frames are shown on the screen as a grey dashed rectangle, but are transparent and invisible when the page is printed or used in a Slide Show. Creating. Frames are created by drawing a Modify box, Right-Clicking, and selecting Make Frame from the pop-up menu. Frames are shown on the screen as a grey dotted line. You can also select Frame Dialog, which creates a frame and shows the Frame edit dialog for setting parameter for the frame (for example – type of HTML frame, or whether the frame should be included in a Slideshow. Position and Size. Frame Objects can be moved by dragging the red origin handle, and resized by first clicking on the origin and then dragging the blue square in the upper right hand corner of the frame. To change only the height of the frame, hold down the <ctrl>-key while dragging the blue square. To change only width, hold down the <alt>-key. You can read and set the exact pixel and physical size of a Frame Object by double-clicking on the red handle. The bitmap pixel resolution can be adjusted by changing the Print Scale (this applies to images formatted either for the screen or for the printer). A larger print scale means more pixels in the imageFrames can be copied and pasted like any other label to create a series of identical frames. Exporting. To export the contents of the frame, Right-Click on the red frame handle, and select WMF-Prnt Clip, WMF-Scrn Clip or one of the other options from the pop-up menu, or select Export... for the Export Dialog that allows you to specify the type of output and other parameters. Editing the DrawingUndoMoving Points and Labels Editing LinesEditing LabelsSearch and ReplaceAligning Graphics Elements.ModifyThe most general and useful editing in PLT is provided by the Modify routine, which allows you to select any portion of a drawing (either "lasso" or "Box" or "Structure"), and carry out many operation on the selected lines and labels. Select a rectangle with the <Right-Mouse-Drag> operation.Use a Lasso to select an arbitrary area with an <alt-Right-Mouse-Drag> move.Select a structure with the <alt-M> key (click on a part of the structure and press <alt-M>). Exit Modify by clicking on the Exit Modify button, pressing the <ESC> key, or with a <Left/Right-Mouse-Click>.Modify ButtonsEditing Graphs ??Moving Graphics ObjectsMoving Points and Labels Individual graphics elements in MAIN can be edited in a number of ways. Any point in the drawing (a vertex or label) can be freely moved with a <Left-Mouse-Drag>, a <shift-Mouse> move, or a <shift-Cursor> move. These moves can be restricted to perfect horizontal direction by holding down the <alt> key; i.e., an <alt-Left-Mouse-Drag> move, or in perfect vertical direction by holding down the <ctrl> key; i.e., an <ctrl-Left-Mouse-Drag> move. For multiline labels (word-wrapped lines) you must click on the first line of text to "find" it for editing or dragging.One Point or all PointsNormally all of the lines which meet at a vertex are moved by one of the above operations. However, sometimes it is important to move only one of the attached lines. To do this, check the Options | Move One Point Only menu item.Moving Lines and StructuresAny collection of points can also be moved by placing them in Modify, and moving the box around in the same way with <Left-Mouse-Drag> (for arbitrary moves), <alt-Left-Mouse-Drag> (for perfect horizontal moves), <ctrl-Left-Mouse-Drag> (for perfect vertical moves) or <shft-Cursor> keystrokes (for movement along the Hexagonal Grid).Editing LinesSelecting LinesSelect any line in the drawing by clicking on it (the line will be highlighted). The line can now be erased with <DEL>, or converted to any other line type (e.g., single to double or triple) or to any ring by clicking on the appropriate graphic in the Side Panel ??. If PLT does not find the exact line you were targeting try pressing the <F-9> and <F-10> keys to move backwards and forwards along the steps. Flip and Reverse of Lines and RingsThe Switch and Reverse Buttons are useful for flipping double bonds and half-headed arrows left/right, or changing the direction of vector bonds (Wedge, Arrow, Hatch-Wedge).When a ring is first drawn it is an Alt-Bond (a single step representation) which can be converted to other ring types, or flipped and reversed (see Cyclohexanes, Rings, Alt-Bonds??).Saving and Loading PLT FilesFile OperationsPLT FilesPLT drawing files use the extension PLT. They contain a series of x,y coordinates, information about line types, line width and color, as well as tex and binary information for labels, graphs, spectra and images. The files are ASCII text files if they are single page, and do not contain graphs, NMR spectra, or images. Otherwise they are binary. INI and DAT FilesPLT stores custom configuration information in an INI file, and uses a data file (PLT71.DAT, required to run PLT) to store a variety of information, including the names and locations of template files for the TEMBASE routine and the x,y-coordinates of the graphics font characters (Font = 0), . There are also a series of scratch files (e.g.: {P}DRW1.TMP) which are used to store temporary information. They are erased when you exit PLT normally, but are backup files in case of a malfunction. Do not interfere with any files of this type while PLT is running.Automatic File BackupFor those rare occasions when WINPLT crashes, or more frequent occasions when Windows self-destructs, PLT has automatic backup protection. Files being edited are automatically saved every 5 minutes. When you next start PLT after a crash, you will get a dialog which will ask whether you wish to recover the files that were active at the time of the crash. Please note that these files are copies, although they will have the same path specification as the actual file (which will usually be an older version than the recovered one).The backups are stored as {P}DRWx.TMP files. If you wish to recover lost data manually, before starting PLT again copy these files to another location, start PLT, and Open each of the files in turn to find any lost material.Saving PLT FilesOpening PLT FilesFile LocationFile ViewINI filePLT File StructureSaving PLT FilesNaming PLT FilesYou are encouraged (but not required) to use the extension "PLT" for all PLT drawing files.Save171450238100This button or the Files | Save menu saves the PLT file under the current file and path name. Previous versions of the file will be overwritten without warning. However, if the drawing still has the original name (UNNAMED1.PLT) then the File Save As dialog will appear.Save As17145047600This button or the Files | Save As menu allows specification of a new filename and disk location to save the PLT file. If a file with the same name is present, you will be warned. A right-click on this button gives the "Save To .." (same as "Open From ..") menu of Directories.Save To ...The Files | Save To ... menu saves the PLT drawing under the current filename, to the location selected from the popup menu. If a file with the same name is present, you will be warned. The Save-To-List can be edited in the Options | Files Location dialog. This feature allows you to quickly save a file to multiple locations (e.g., to a:\ or to a removable Zip drive and to a location on your hard drive) for backup or transportation purposes, without having to manipulate through multiple foldersClose171450-254000This button will close the current drawing (the hot key is <ctrl-F4>). You will be warned if changes were made since the drawing was saved. Only 14 drawings can be open at one time.Crash ProtectionIf PLT is exited abnormally, either by a system crash or shutdown or by an internal PLT error, all PLT files currently being edited can be recovered when PLT is next started. A backup is automatically made every five minutes.File Open and SaveOpening PLT FilesOpening (Loading) PLT FilesOpenThis button or the Files | Open menu is used to open PLT files. The default folder is the one specified in the Initial Folder File Location. A <Right-Click> on this button gives the "Open From .." menu of Directories. Open From ...The Files | Open From ... menu goes directly to the location selected from the list of drives and folders in the popup menu (the Save-To-List, which can be edited in the Options | Files Location dialog). Once you have properly defined all PLT file locations in your system, you need never negotiate through multiple folders again. You can also get the Open From ... menu by <Right-Clicking> on the Open button.File ViewThe File View button (<alt-F> key) or the Files | File View menu is used to view PLT files on the screen. The displayed file can be opened, or portions of the drawing can be copied and pasted into the current drawing (use <Right-Mouse-Drag> to select). A <Right-Click> on this button gives the "Open From .." (same as "Save To ..") menu of foldersNewThis button will open a new drawing. No more than 14 drawings can be open at one time.Insert FilesPLT files can be inserted into a drawing as a separate page or pages,. Right click on the PgUp/PgDown button (lower right corner) or on the Page Navigation Bar (upper right corner) and select Insert File from the pop-up menu.File Open and SaveSaving PLT FilesTemplate Files WINPLT comes with an assortment of Template (TEM) files which contain a variety of structures that can be easily imported into PLT drawings. A TEM file is an ordinary PLT drawing with one special feature: each individual structure is preceded (in the order of steps) by a TAG name (a label with two dashes before and after the text, such as –TagName--. There are two ways to import a Tagged structure into a PLT drawing:?Click the Templates button or the Insert | TemplateView menu (see File Location), select one of the TEM filenames displayed (e.g., RINGS.TEM), and then Double-Click on the desired structure. PLT places the structure you selected into Modify, so you can move it, edit it, copy it to the clipboard or erase it. You can also capture and import any rectangular area of the TEM drawing with a <Right-Mouse-Drag> (see File View)?Use the Template Database. Select the Insert | Tem Base menu. In the TemBase dialog click any of the TEM names to get a list of the TAG names in that file. Select the TAG name you want, and Click the Import TAG button to copy the displayed structure to your drawing (it is placed in Modify). You can also copy the Tagged structure to the PLT Clipboard with <ctrl-C>. However, this also copies the TAG name, and is intended mainly for use in editing the Template Database.You should create TEM files of any complicated structures you use frequently in your work. They will speed up the drawing process, maintain accuracy in your structures, and allow the presentation of complex structures in a consistent way.The Template DatabaseEditing the Template DatabaseEditing Template FilesEditing TEM FilesTo maintain the integrity of the TAG system in TEM files for proper retrieval of Tagged structures, it is important to understand that it is the order of the steps that is crucial: a TAG structure starts with the name, which can be up to 30 characters long, the first two and last two must be hyphens. Thus a proper TAG name label is [M > --Strychnine--]. Following the TAG name, all of the individual graphics steps of the strychnine structure must be in sequence until the next TAG name (e.g., [M > --Brucine--]) which signals the end of one and the beginning of another TAG structure. An easy way to ensure that the step order is maintained is to use the Tem Base Dialog (Templates | Tem Base menu), but direct editing is also straightforward, if the following procedures are followedDrawing a New Structures in a TEM Drawing:Follow the sequence: First, using <Write>, prepare the TAG name label. Remember to precede and follow the TAG name with two hyphens. Then draw the structure in the usual way centered above the TAG name.Pasting a Structure into a TEM drawing:As above first prepare the TAG label. Then copy a structure (using Modify, <ctrl-C>) into the PLT Clipboard, and paste it into the TEM drawing with <ctrl-V>. Properly center the structure above the TAG name, and press <ESC> to exit Modify. It is important to understand, that it is not the physical proximity of the TAG name to the structure that is important (although certainly desirable for easy use), but the sequence of steps.Editing a structure in a TEM Drawing:Edit the structure in the normal way. During the editing process new steps may be added, and these steps will probably not be in proper sequence. To place the steps in sequence, first cut the TAG label (click on the label and press <ctrl-X>), move the cursor slightly, and then paste the label back in (this places it at the end of the sequence of steps). Then place the structure in Modify (use <Right-Mouse-Drag>) and cut it with <ctrl-X>. Now paste the structure back in at the appropriate position with <ctrl-V>. All steps will now be in the right sequence.Checking a TAG structure:To see which portion of a drawing is part of a TAG name, click on the TAG name and press <alt-M>. PLT will place the Tagged structure, including the name, in Modify.The Template DatabasePLT maintains a small database which includes all of the template (*.TEM) files in the template folder, and all of the TAG names in each TEM file. Use the <T> key or the Tem Base feature in the Insert menu to access the database. PLT presents an alphabetized list of all TEM files in one list box, and a list of TAG names (with the TEM filenames they are stored in) in a second list box. A picture box displays the structure of the currently selected Tagged structure.Capacity of the Template DatabaseThe current limitations are: 200 TEM files, 2000 TAG names, maximum of 100 TAG names per file, maximum of 10 TAG names per structure (synonyms).Updating the DataBase.PLT will automatically update the TAG names and TEM filenames as you edit TEM files or add new ones from within PLT. However, if you add or delete TEM files using an external program (such as File Manager) then you should click the Update TBase button to initialize the TEM and TAG names properly.Using TEMBaseClick on any of the TEM names to get a list of the TAG names in that file. Click on the Import TAG button to copy the displayed structure to your drawing (it is placed in Modify). You can also copy the structure to the PLT Clipboard with <ctrl-C>. However, this also copies the TAG name, and is intended mainly for use in editing the Template Database.Editing the Template DatabaseThe TEM Database Dialog (Insert | Tem Base menu) allows direct manipulation of the TEM files stored on disk in the \PLTTEM folder. TEM files can be deleted or created. Individual Tagged structures in each TEM file can be copied, cut, pasted, deleted, or renamed. The structures themselves cannot be edited within TemBase, but have to be cut out of the TEM file, pasted to the MAIN editing window for editing, and then pasted back into the TEM file. See below. Adding a Structure to the TEM Database:In MAIN, use any of the normal drawing routines to draw the desired structure, or Open an existing file which contains the structure. Place the structure in Modify (use <alt-M>), copy it with <ctrl-C>, and exit Modify <ESC>. Then click on the Templates | Tem Base menu to bring up the TemBase Dialog. Select the appropriate TEM file from the left list box, and press <ctrl-V> to paste (or select from the Edit menu). If the structure does not contain a TAG name, you will be asked to provide one. The new Tagged structure should appear in the bottom window.Deleting a Structure from the TEM Database:Select the proper TEM name and TAG structure in the appropriate list boxes, and press <DEL>, or select from the Edit menu. You can also press <ctrl-X> to copy and cut the structure, so it can be pasted into a different TEM file.Renaming TAG Structure in the TEM Database:Select the proper TEM name and TAG structure and press the Rename TAG button (or press <alt-R>). Edit the name or type a new one. If you delete the name, the TAG structure will be deleted (unless there are synonyms, see below).Adding a Second Name to a TAG Structure (a Synonym):Sometimes it is convenient to have several TAG names for a single structure (e.g., Tropone and Cycloheptatrienone) to aid in finding the compound again. Press the Add Name button and type a new TAG name. In the TEM file the name will appear as follows [M > --Tropone--{/}--Cylohexadienone--]. Adding a New TEM file to the Database:Click on File | New TEM file in the TemBase Dialog, and type the new name.Deleting a TEM file from the Database:In the TemBase Dialog, select the appropriate file name in the TEM list box, and click on File | Delete TEM file. This results in loss of all TAG structures in the file.Editing a TAG structure:To edit a TAG structure you have to cut it out of the TEM file, edit it, and paste it back in. Proceed as follows:- Find the structure in TemBase (select the TAG name).- Cut the structure (<ctrl-X>) and exit the TemBase dialog.- Paste the structure into a clear area of the screen using <ctrl-V> and exit Modify (<ESC>).- Do the editing as usual.- Place the structure, including the TAG name, in Modify (click on the TAG name and press <alt-M>)- Copy (or Cut) the structure to the PLT Clipboard (<ctrl-C> or <ctrl-X>).- Call up the TemBase dialog and select the proper TEM file.- Paste the structure into the TEM file (<ctrl-V>).Moving a Structure from one TEM File to another.- In the TEMBase dialog, find the structure and cut it with <ctrl-X>.- Find the new TEM file and paste the structure (ctrl-V).INI filePLT saves configuration information in PLT71.INI. Like most INI files, this one can be edited by hand, but we recommend against this since certain entries require a specific syntax to work properly. An INI file is not needed to run PLT, but one will be created the first time you run PLT.Custom INI FilesIf you want PLT to start with a custom INI file (not the default PLT71.INI), then place the complete path and filename as part of the startup command line. e. g.; in the Program Manager Files | Properties menu enter PLT71.EXE C:\PLT\MYOWN.INI on the command line for the PLT icon. In this way multiple users can each configure the system as desired. There is no facility within PLT to create a second INI file, or to start using a second INI file, an INI file can be loaded only when PLT is started. Simply copy PLT71.INI with a different name, or copy it to a new location and enter the path and name on the command line.Sections of the INI file.[File Location] (These path names can be selected and saved in the Options | File Locations dialog) Templates = This is the full path to the folder where TEM files are stored. PLT Drawings = This is the full path to the folder of the first Files | Open dialog. NMR Spectra = This is the path that will be used when NMR spectra are loaded (Insert | NMR Spectrum).[Save To List](This lists the files that have been selected in the Options | File Locations dialog for the Files | Save To ... and Files | Open From ... menus. Up to 15 locations can be selected) 1=a:\ 2=b:\ 3=c:\pltdraw[Preferences](There may be many of these parameter settings. Only the number at the beginning matters, not the description. These are saved to the INI files from the Options Parameter dialog boxes. Only entries that are different from the default values need be stored here.)16 DoublBondSep(mm):=1.40 18 Hid Line Cut(mm):=1.10[Toggles](These are automatically saved on exit)XYCoord=False (Print Coordinates on screen)PrintBox=True (Show page boundaries on drawing screen)Maximized=True (Screen display - full screen or partial)Show Grid=True (Screen display of Grid lines or points)MODCOPYWMF=True(Will place an EMF of the Modify Box contents into the Clipboard when it is copied with <ctrl-V>)SHOWHANDLES=True(Show the red Bezier, Graph, NMR spectra, and Docking handles (markers)WMFIncludePLT=False(Include a copy of the PLT drawing in all enhanced metafiles EMF's, so that the drawing can be copied back into PLT from a word processor, PLT data cannot be included in WMF's)NoPrinterLandPort=True(Will emulate Landscape/Portrait switching by 90° rotation rather than switching the printer. For OS/Printer combinations for which land/port switching fails or causes a computer malfunction. This option can only be set by editing the INI file).UsePLTDialog=True (This causes the PLT File dialog to be used instead of the standard Windows Dialog for File Save and File Open operations)[Styles](These list style numbers, names, and the label parameters associated with the style. If you edit these directly, use the exact format shown below. Styles are best edited in the WRITE dialog, Edit | Edit-Styles menu)9=Reich Hlp Style, S = 12 C = 9 LL= 250[HTML Styles](These list style numbers, names, and the HTML tags associated with the style. These will be used to format labels when PLT documents are published as HTML)5=Title, <font size=+2 name="Arial" color="#0000FF">|</font> [Last N Files](These list the last 13 files that were edited in PLT. These entries appear in the Files menu. They are saved automatically on exit)[Font Definitions](Definitions of the assignments of font numbers 3-14. Font definitions are made in the Edit | Edit-Fonts menu in WRITE).3=Arial4=Times New Romanetc[User Text](The default entries in the User menu (WRITE dialog) are a series of blank journal citations, the menu caption is "Journals". These entries can be edited or replaced only by making changes directly in the INI file. There are a maximum of 10 entries, and there can be no more than about 40 characters in each entry). Menu=Journal1=^IJ. Am. Chem. Soc.^i ^J19^j, ^I0^i, 02=^IJ. Org. Chem.^i ^J19^j, ^I0^i, 0etc[Color Schemes](This gives the number of the current Color Scheme)). Current=2 [Color Scheme x](This gives the definition of Color Scheme x. There may be as many as six of these). Name=Default Colors0=Black, 01=Blue, 8388608etc[NMRSPEC](This saves the option toggles selected in the NMR dialog Options Menu)Option Toggles=512[Dialog Position and Size](This saves the size and position of various dialogs in PLT. If dialogs become misplaced due to changes in screen resolution or otherwise, delete this section and restart PLT)PrintPreview=1485, 2190, 10995, 7710NMRSpec=0,-60, 15360, 11640etc[ExportButtons](This stores the functions of the three Export menu items in the File menu, and the two export buttons in Modify. They are coded as follows: first is the file or bitmap type (WMF, EMF, GIF, BMP. EPS), then an identifying character (-S or -P) for bitmaps indicating whether the bitmaps should be configured for screen resolution or printer resolution. Printer resolution is often very high and will result in very large BMP files. Next are identifiers of the framing method (Box, Draw, Marg, Page) and finally identifiers (Clip, Disk) which specify whether the object should be placed in the Windows Clipboard or in a disk file (only BMP, WMF and EMF can be placed in the clipboard))Button1=WMF-P Box ClipButton2=BMP Box Disketc[Graph Marks](This identifies the labels and label parameters to be used for the 10 graph markers. These can be edited in the Graph Dialog)1=Open Square, M B = 1.35 R = .8 O = 0 > ^N^H^B2=Filled Square, M B = 1.35 R = .8 O = 0 > ^Q^H^Betc.File CompatibilityForward Compatibility Win PLT V 7.1 can open (Load) PLT files from all previous DOS and WINDOWS versions of PLT.PLT File StructurePLT uses two types of file structures. If a drawing contains multiple pages, an NMR spectrum, a graph or an image, then a binary file structure is used. Contact the Author if you need access to details of such files. Otherwise, PLT uses comma delimited ASCII files which can be easily manipulated and created by other programs, and even edited in word processors like WORD or WordPerfect or file editors like Notepad.The ASCII file structure is as follows. First line:PLT,1619, 3.6, 1.00, 0.7, 0 1619 = version number 3.6 = letter height 1.00 = letter breadth 0.7 = Print scale last used for the drawing 0 = Landscape/Portrait orientation 0=portrait 1=landscapeSubsequent lines: x-increment (single precision floating point), y-increment (single precision floating point), line type (2-byte integer), "label" (string). The x and y increment are in mm from the previous position (or from the center of the page for the first step). -10.60, -0.30, -1,"" 5.31, 14.70, -1, "M P = 2 > Li" -13.10,-1.20, 9, ""The line type 2-byte integer is coded as follows:The 1, 2, 4, 8, 16, and 32 bits code for the bond type (see below) .The 64 bit codes for direction (e.g., if set, reverses direction of arrow). The reverse button or key <ctrl-R> toggles this bit.The 128 bit codes for left/right orientation (e.g, if set, reverses the left/right orientation of a double bond or a half-arrow). The switch button or the key <ctrl-S> toggles this bit.The 256, 512 ans 1024 bits code for the line width (0=normal, 256=bold, 512=thin, 256+512=extra thick, 1024=extra thin)The 2048, 4096, 8192, and 16384 bits code for the 16 line color numbers. (0=color 0 (black), 2048=color 1, 4096=color 2, 2048+4096=color 3, etc.)The sign bit (32768) is set for special circumstances. If the integer is -1 then the line is pen-up (i.e., a move). If the integer is -2 then there is a graph at the current position, if -4 then there is an NMR spectrum at the current position, if -6 then there is a frame at the current position, if -8 then there is an image at the current position. Drawings with -2, -4, -6 and -8 items are not saved as ASCII files.The bond types (bits up to 63) are coded as follows:1=single2=half arrow (64 bit is used to reverse direction 128 bit reverses left/right)3=narrow wedge (64 bit is used to reverse direction)4=wedge (64 bit is used to reverse direction)5=unused (defaults to single)6=bold7=triple bond8=small arrow (64 bit is used to reverse direction)9=left/right double bond (128 bit is used to reverse left/right)10=Arrow (64 bit is used to reverse direction)11=wiggley12=dotted13=dashed14=circle15=hatched wedge (64 bit is used to reverse direction)16=hatched17=Mid double bond18=rectangle diagonal19=square brackets20=angle brackets21=equilibrium arrow (128 bit is used to reverse left/right)22=resonance arrow23=rounded box24=current line is part of a bezier curve 24+1=Plain Bezier + arrowhead 24+2=Plain Bezier + double arrowhead 24+3=Dotted Bezier 24+4=Dashed Bezier 24+5=Dashed Bezier + arrowhead 24+6=Bezier Filled 24+7=Plain Filled (not a Bezier) 32 Not used 33=3-membered ring (64 or 128 bit reverses left/right)34=4-membered ring (64 or 128 bit reverses left/right)35=5-membered ring (64 or 128 bit reverses left/right)36=6-membered ring (64 or 128 bit reverses left/right)37=7-membered ring (64 or 128 bit reverses left/right)38=8-membered ring (64 or 128 bit reverses left/right)39=9-membered ring (64 or 128 bit reverses left/right)41=benzene ring with circle42=benzene ring with double bond (64 or 128 bit reverses left/right)43=benzene ring with single bond (64 or 128 bit reverses left/right)44=cyclohexane1 (64 bit reverses left right, 128 bit reverses chair - ring flip)45=cyclohexane2 (64 bit reverses left right, 128 bit reverses chair - ring flip)46=cyclohexane3 (64 bit reverses left right, 128 bit reverses chair - ring flip) 51=continuous dotted (used only in graphs)52=continuous dashed (used only in graphs)The Label is coded as follows:The first character must be F, M, L, T, ., /, =, or : . This determines justification: first, middle, last, text or aligned with the first decimal, slash, equal sign, or colon of the label.Following this there may be up to ten label parameters, of the form C = 6 (color number 6), P = 2 (pen 2, bold), H = 5 (height = 5 mm), etc.The character > indicates the end of the label parameters and the beginning of the label text itself. Graphs, Images and NMR SpectraPLT drawings which contain Graphs, Images or NMR spectra are stored in a binary format which will not be described here.Printing and ExportingAny contiguous series of pages of a multipage PLT drawing (current page, page range, or all pages), or parts of drawings can be printed on standard Windows output devices. Parts of drawings (an entire page, individual structures or equations) can be selected using the MODIFY routine, copied to the Windows Clipboard as Windows Metafiles (WMFs) and pasted into other graphics-capable programs. Under some circumstances PLT drawings can also be copied back from Word Processors to WINPLT using the Clipboard.The drawing can be printed directly using the current settings by clicking on the print icon, or by pressing <P> in MAIN, or from the Print Setup dialog in the Files menu.Positioning a Drawing on the PagePage Orientation - Landscape/PortraitExporting Drawings MS Word and PLT WordPerfect and PLTExport HTML Export HTML with FramesetPrint Drawing NameIf this option in the Print Setup Dialog is checked then PLT will print a brief description at the bottom of the drawing. Click the Format Drawing Name button to get a dialog which allows you to set the information that will be printed on the bottom of the page (if the Print Drawing Name Checkbox is checked). In the Unregistered version, this feature prints some additional material, and cannot be turned off.Print Black on White.If this option in the Print Setup Dialog is checked then PLT will print the background in white, and all other colors will be printed black, no matter what the color assignments are. This allows colored PLT drawings to be printed on both color and black and white printers without editing the colors.Print All Pages or Range of Pages.If the PLT drawing is multipage, then either the current page, all of the pages, or a range of pages can be printed, depending on which of the buttons is selected. Print Multiple Pages per Hard-Copy Page.There are three radio buttons on the Print Setup dialog (Full Page, 2/Page, 4/Page, 6/Page) which allow PLT drawings to be printed in miniature format, either 2, 4, or 6 pages per page. This allows production of a compact hard-copy of a multipage document. The page orientation has to be the same for all pages printed this way (PLT will simply use the print orientation of the current page (Landscape or Portrait)Printer Setup.This button brings up the standard Windows dialog for selecting and configuring printers. It may be worthwhile to set the printer orientation (Landscape, Portrait) the same in this dialog as on the current PLT page, to avoid confusing the printer. Below the Print Setup button is a drop-down list box which contains a list of the previously selected printers for easy switching between printers (say between printing hard copy and making PDF files).Positioning a Drawing on the Printed PagePage BoundaryThe appearance of the printed drawing will be affected by three features: the Print Scale Parameter, the Page Orientation, and the position on the page. If the Options | Show Page Boundary menu item is checked, then PLT will show the current page boundary (printable area) on the screen at all times as a dotted red line. This boundary does not restrict graphics lines and text, but serves only to tell you where you are on the page, and allows you to plan your drawing appropriately. Print SetupThe simplest way to fine-tune the scale and page position prior to printing is in the Print Setup dialog (File | Print Setup menu). The dialog shows a miniature version of the page, with two rectangles. The outer one represents the physical page boundary, the inner one the printable area of the page (material outside this area will be clipped). The page boundary can be changed with <Mouse-Left-Drag> anywhere on the page. The scale of the drawing can be changed by dragging on the red handle at the top right corner of the page. Scale can also be directly set in the text edit box.The Setup... button in the Print Setup dialog allows selection of of printers and other features using the standard Windows printer dialogs. This will reset the default printer for the computer.Format Drawing NameClick this button for a dialog which allows you to set the information that will be printed on the bottom of the page (if the Print Drawing Name Checkbox is checked).Page Orientation - Landscape/Portrait This icon in the Files | Print Setup dialog shows the current page orientation, click on it to reverse the direction. If the icon does not change, then the current printer does not support the selected orientation (or PLT is unable to get the printer to switch). You can save the current configuration (Scale, Orientation, Drawing Name Option, Drawing Name Style) by pressing the Save Setup button. Press the Print button to begin printing.If Landscape/Portrait switching does not work, or if switching between the two page orientations causes a computer malfunction, you can force PLT to emulate Landscape/Portrait switching by 90° rotation rather than switching the printer. Add the following entry to the {Toggles] section of the PLT71.INI file: NoPrinterLandPort=TrueImporting and Exporting PLT GraphicsSlide ShowPLT can be used to present slide shows of multipage PLT documents. This lacks many of the more fancy features of Power Point ??(for example, the talk cannot include movies or sound clips) but has the great advantage that no cutting, pasting, or resizing of the graphics material is required: editing the PLT drawings directly edits the presentation. There are two types of slide shows: select Slide Show Frames (recommended) or Slide Show Page from the View menu. Slide Show Page This mode shows each page of the PLT drawing in sequence, using the printer page margins as the bounding box. Slide Show Frames The second type uses a series of frames as the bounding boxes for each slide of the presentation. The intended use is to allow a PLT document properly formatted for printing (i.e., portrait mode, scale 0.6-0.7) to be also used for a slide show presentation. Thus a single document can be printed as a class or seminar handout, and can also be used directly to present the material by computer projection. There may be multiple frames on a single page of the PLT document. Parts of the material in the PLT drawing may be omitted from the Slide Show presentation by not enclosing the material in a frame or clicking the Omit radio button in the Frame properties dialog. A frame marked for inclusion can also be excluded from the slideshow by placing a label "SKIP" inside a slideshow frame with style = 8 (Y = 8) . This allows easy editing of slideshow contents (just by dragging the "SKIP" label into or out of a frame. Material that is off the page can be enclosed in a frame, allowing material to be presented in a Slide Show that would not appear in a printed version of the document.PLT can also be used to create web pages of the material in the document. Presenting a Slideshow: Once you have all the material framed properly, and the frames marked Include frame or Omit frame in the Frame dialog you are ready to present the slideshow. In MAIN, press <alt-S> to start the slideshow, and <ESC> to exit.Branching during a Slideshow: The Frame-based slideshow has a feature that enables branching during a presentation. You can add a Slide Name any frame in the slideshow that you might want to branch to (fill in the Name line in the Slideshow section of the Frame dialog). During a slideshow <Left-double-click> to get menu of all Slide Names, click on one to jump to that location. From here you can move backward and forward as usual. When you want to resume the normal sequence, <Left--double-click> on the screen again to get a popup menu, the top entry will now be the page you came from, so you can continue the slide show where you jumped out of it, or jump to another location.Slide Show Page This mode shows each page of the PLT drawing in sequence, using the printer page margins as the bounding box.Several Keystrokes are used to handle the presentation:<alt-S> Start Frame-type slide show<Up-Arrow> or <Right-Arrow> Next slide<Down-Arrow> or <Left-Arrow> Previous slide<SPACE BAR> Skip a slide<ctrl-Home> First Slide<ctrl-End> Last SlideType two numbers (e.g. "13") - go to that page.<ESC> exit slide show (return to normal PLT main menu)<P> Make a new PLT drawing of just the slide show, excluding any extraneous material that was not marked a part of the slideshow. Can be used, for example, to make a PDF of the slideshow.<Z> Zoom: center slide at last mouse click location and increase scale (toggle)<C> Clear screen of annotationsThe Mouse can also be used in the presentation:<Right-Mouse-Click> <Left-Mouse-DblClick> Get a pop-up menu of Named frames, for non-linear presentation of slides (asides, answers to questions, more detail, etc see Branching above)<Left-Mouse-Drag> Annotate slide (John Madden). The default annotation color is red. The line color can be changed with the functions keys: <F-9> = red; <F-10> = Blue, <F-11> = Green, <F-12> = Cyan.If you hold down a Shift key while "writing" with the mouse, it will erase previously drawn lines. Page Numbers: During the slide show the current page number can be shown at the top or bottom right corner of the screen (Select from the Options menu | Screen setup | Slideshow page number). You can define a page-number offset (to count page numbers from a number other than 1 for the first page) in the Options Menu | Page Number Offset and the page number format in the Options Menu | Page Number Format . For example, if you wish to have the Slide Show page number indicator for page 4 of the PLT drawing appear as "B-7" you would set Page offset to 3 and Page Format to "B-{Page#}."Slide Show Tips?Use Styles for title (Y = 5), subtitles (Y = 4), and other text material which requires changes in font face, size or color. This allows changes to be made easily in all the slides in a presentation.?For a Page-style slide show use a Print scale of 0.85-0.95 for proper sizing and visibility of the material in the slide show. The screen will show approximately what would print on a normal size page (8.5x11 in). For a Frame-style slide show, if printscale is 0.6, then a frame that goes from page margin to margin in width (assuming portrait orientation of the page) is the largest frame that will display well on a typical 1024x768 pixel projection system. For better visibility frames should stay 2-3 cm inside the page margins.?Make sure that Font Smoothing is turned on (Windows Control Panel, Display Properties, Effects, Smooth edges of screen fonts).?Use a display resolution of at least 1024x768 pixels.?If you use color in the Slide Show presentation, but use a black-and-white printer to make hard copy, it is usually a good idea to click the "Print drawing Black on White" check box in the Print Setup dialog to avoid gray-scaling of the colored portions.?If lines appear too thin on the screen during the Slide Show you may be trying to put too much material on the screen. It might help to adjust upward the Line Thickness parameters in the Options | Line Drawing menu.Printing a Frame-Based Slideshow. It is sometimes useful to print out a copy of your slideshow presentation, or make a pdf file for backup or presentation on another computer. This is straightforward with a Page-based slideshow, but not with a Frame-based one. For this reason a feature is available for converting a frame-based slide show to a new PLT drawing containing only the slide show material. This can then be printed or converted to pdf file. During a slideshow press <P> and respond to the dialog. This will create a new PLT drawing of just the material in your slide show, one page per frame. The filename will be "CURRENTNAME-copy-slideshow.plt" Each page will have the Print scale set to properly enclose the frame. This drawing can now be printed or used in any other way like a normal PLT drawing.Exporting PLT DrawingsAny portion of a PLT drawing can be converted to several common vector and bitmap image formats for incorporation into other programs or display on various devices. PLT drawings can also be exported as HTML pages for placement on the Web.Quick Summary: To export part of a PLT drawing you must:(1) Decide on the boundaries of the rectangle to be converted to an image (we recommend using Frame Objects, but a Modify box is also very convenient). There are also several framing options that are automatic: margins, drawing, page.(2) In the Files menu, select the Export... entry and pick the appropriate type of image, and any image properties, or select one of the four user-definable items (Export 1, Export 2, etc) from the menu. If in Modify, there are also two user-definable export buttons that you can click.(3) Follow the prompts (select filename, etc).For example, to paste part of a PLT drawing into another Windows program, carefully frame the part structure in a MODIFY box using <Right-Mouse-Drag>, and press one of the export buttons on the MODIFY side menu, for example WMF Box Clip (or use the Files | Export .. menu entries). After a brief pause, the image that you have generated will have been copied to the clipboard (only WMF, EMF and BMP images can be copied to the clipboard) and will be shown on the screen so you can check content and framing. The image can then be pasted into another document (for example, a WORD or WordPerfect document, or a PowerPoint slide) with <ctrl-V> or using the Edit | Paste or the Edit | Paste Special menu items in the target program.Available FormatsWindows Metafiles (WMF or EMF) are vector graphics images recommended for exporting drawings to most Windows word processing and graphics programs. EMF's can be arbitrarily scaled by the receiving program, although it is advisable to use them at close to the original scale to avoid distortions and poor label placement. PLT can produce either the old (16-bit) Windows Metafiles (WMF) or the new 32-bit Enhanced Windows Metafiles (EMFs). Some programs (such as Corel WordPerfect and Microsoft Word 2000) do not properly incorporate EMFs (they degrade the resolution of EMFs substantially) so WMFs will look much better on the screen and when printed. WMFs and EMFs can be exported either as files or to the Windows Clipboard. Most of the graphics in this help file are WMF's produced with PLT (e.g. Hidden lines).If the Options | Make WMF Mod Copy menu option is checked then a WMF will be prepared each time you copy the Modify segment with <ctrl-C>. Turn this option off if the time needed to produce larger metafiles is uncomfortably long (i.e., if you are using a slow computer).If the Options | Include PLT in EMFs menu option is checked, then a copy of the PLT drawing will be included in the EMF (this option is not available for WMFs). You can then copy the structure back into PLT with full editing restored. Incorporating PLT structures into EMF's will increase the size of the graphics material by about 50%.Windows Bitmaps (BMP) are dot images native to the Windows operating system. BMPs will be produced at the color depth of the screen display, and they are not compressed so they tend to be rather large. BMPs can be exported either as files to disk or to the Windows Clipboard. Not recommended for large images. Many programs (including PLT) accept BMP imports, and so this is a good format for pasting chemical graphics to and from other programs. Like all bitmap formats, BMP images do not scale particularly well, so you must consider the resolution of the output device, and try to match it with the image produced by PLT. Not recommended for large images. BMP images in a PLT drawing can be converted to JPG or GIF format. Greatly reducing the size of the documentGraphics Interchange Format (GIF) images are highly compressed bitmaps commonly used in Web pages to show graphics images. They are best used with graphics having a small number of different colors (colored line drawings, for example. They are not well suited for color pictures. They will be produced at the color depth of the screen display. PLT can prepare GIFs with either a transparent (preferred for Web applications) or opaque background. If you are planning to print the images on a high resolution printer you need to set the PLT Printer scale to a larger value (say 1.5 or 2.0) than would normally be used (0.6-0.8). This will produce a higher-resolution bitmap and will look better when printed. PLT can import GIF images. Joint Photographic Experts Group (JPG) - a full-color format which is highly compressed - well suited for the display of high resolution color photographs on web pages. JPG Photographs can be inserted into PLT drawings.PostScript EPS - Encapsulated postscript - this is a sophisticated format introduced by Adobe for very high quality display of complicated text, graphics and raster data. They can be printed only on PostScript-capable printers, and are not generally accepted by Windows programs. The format does not seem to be used much anymore, and the Postscript driver in PLT has not been updated for several years.Disk or ClipboardClipboard. WMFs, EMFs or BMPs can be exported to the Windows clipboard. To copy a Metafile to the Windows Clipboard select one of the framing options (described below) and choose the "Clipboard" option in the Files | Export dialog. The image will be placed in the Windows Clipboard for transfer to other programs such as word processors or drawing programs. Switch to another program capable of handling graphics images (such as WinWORD or WordPerfect for Windows), position the cursor, and import the structure, usually with a <ctrl-V> Paste command, or using the Insert menu. Disk. All of the export types WMF, EMF, BMP, GIF, JPG and EPS can exported as disk files. Select "Disk" in the Files | Export dialog. Framing (Bounding Box)Each type of image must have a well-defined bounding box - a frame. The frame dimensions are used by the receiving program to define the border of the image for proper sizing and placement, and to reserve the correct space on the page for the drawing. PLT provides several framing options:?Frame Object: Strongly Recommended! A rectangular portion of a drawing can be permanently marked by a Frame, so that a WMF, GIF or other image can be created and re-created reproducibly. Frames are created by drawing a Modify box, Right-Clicking, and selecting Make Frame from the pop-up menu. They are shown on the screen as a grey dotted line, and can be easily moved and resized. To export the contents of the frame, Right-Click on the red frame handle, and select one of the Export options in the pop-up menu (these can be configured in the Files | Configure Export | Export 1-4 dialog), or you can select image type and properties in the Export ... pop-up menu item. Frame Objects can be moved and resized easily, and they can be copied (<ctrl-V>) to create a series of identical frames. You can read and set the exact pixel size of a Frame Object by double-clicking on the red handle. The pixel resolution can be adjusted by changing the Print scale (this applies to images formatted either for the screen or for the printer).The following framing options can be selected in the export dialog (accessed through the Files | Export ... or the Files | Configure Export menus):?Drawing: This option creates the minimal frame needed to fully enclose the drawing. It also adds an internal margin, whose size is determined by the Options | Print Options | Framing Margin Parameter. If you are in Modify, then this option selects a minimum bounding box for the material in the Modify box.?Lft/Rt Margins: This option creates a framing rectangle with the minimum dimension in the vertical direction to fully enclose the drawing (or the contents of the Modify box), but uses the paper margins as the left and right edges of the frame. It also adds an internal margin. This is a useful framing type for consistently incorporating chemical drawings in documents. The drawings will all be the same pixel width (provided you keep Print Scale constant).?Full Page: This uses the page margins as the framing rectangle.If you are in MODIFY, an additional option is available:?Modify Box: This option uses the Modify rectangle as the frame and allows you to include only a portion of the drawing, and to frame it arbitrarily. ResolutionWindows Metafiles can be formatted for use either on the screen (low resolution, 50-100 DPI) or on a printer (high resolution, 300-1200 DPI). Printer. If the image will become part of a document that will be printed then use WMF-P or EMF-P in the Export dialog (P stands for Printer). The pixel resolution will be that of the currently selected printer, scaled by Print Scale Parameter. Screen. If you are going to be using the images for computer screen presentation, use WMF-S or EMF-S (S stands for Screen). The pixel resolution will be that of the computer screen you are using, again scaled by the Print Scale Parameter. Thus if the absolute width of the area you select (for example by a Frame Object) is 5 inches, the screen resolution is 100 DPI, and the Print scale is 0.7, then the image will be approximately 5 x 100 x 0.7 = 350 pixels wide. If you reduce Print Scale to 0.35, the image will be much coarser, only 175 pixels wide, and will be only 1/4 the size in bytes.For GIF images used on WEB pages, image width should probably be under 1000 pixels. This means a Print Scale of 0.6 to 0.8 is about right to produce nicely readable chemical drawings of the right size.WordPerfect and PLTMS Word and PLTExport ButtonsThere are two buttons (configurable by the user) available when Modify is in use which allows export of the contents of the Modify box as a BMP, WMF, EMF, GIF, JPG or EPS file or clipboard object. e.g., the button captions might say:WMF-P Box ClipEPS Marg DiskYou can configure each button by a mouse <Right-Click>, and making appropriate selections from the Export Dialog.These buttons will create the appropriate graphics file or clipboard object for export to other programs. For example, if the button caption is WMF-P Box Clip, clicking it will produce a memory Windows metafile (WMF Clip) formatted for the printer (-P) using the Modify box as the bounding box for the graphic.The second button (EPS Marg Disk) would produce an EPS file using the top and bottom of the Modify box as the top and bottom of the bounding box, but the page margins as the left and right limits of the bounding box. The hot keys are <alt-W> or <alt-D>. It is important to frame the metafile properly (e.g., if you want the drawing area to extend from margin to margin in the receiving document, then draw the Modify box from margin to margin on the PLT screen). You also use the Files | Export .. menu entries which provide a dialog where framing options, image type and other options can be set.HTML Export of PLT DrawingsPLT can convert drawings to HTML web pages. This capability is somewhat limited, intended mainly to easily produce typical chemical documents.Web pages can be produced in three different formats. The HTML page can use any contiguous series of pages in a PLT document (current page, page range, or all pages): (1) as single web pages from a one or more pages of a PLT document (2) as a multi-page web site with a content panel on the left side. (3) as an index to a series of GIF files with a content panel on the left sideThe common PLT text formatting features such as font name, font size, underline, color, bold, italic, superscript and subscript are all properly rendered in the HTML file. The renderings of PLT Styles can be adjusted by the user. Non-text material can be converted to GIF files, and inserted into the document as image links (<img src="PLT-Drawing{01}.gif">)Preparing a Drawing for HTML Export as a Web PageIt is necessary to mark all parts of the drawing that are to appear in the web page with frames, to distinguish the graphics from the text portions, and to omit extraneous material. Thus, draw a frame around any part of a drawing that contains only text, double-click on the red handle, and click the box Text Frame in the HTML Framing section of the frame dialog. This material will appear in the web page as formatted text. Similarly, put a frame around areas that contain graphics (structures, graphs, NMR spectra, images), and identify them as Graphics Frames. Also put graphics frames around any text material with complicated positioning (tabular material, rotated text, or text containing symbols not supported by HTML). This material will be inserted into the HTML document as a link to a GIF file. Both types of frames should extend more or less from the left to the right margins of the drawing. Any material not enclosed in either a text or graphics frame will not be included in the web page(s) created. You can also mark a frame to be omitted from the HTML renderer (Ignore frame content in Frame dialog). Frames for the HTML document do not need to be within the pages margins of the PLT document, so the HTML material can be different from the material on the printed page of a PLT document.The image produced by a graphics frame can also serve as a link within the web page. Place the name of target file (html, gif, pdf or other browser supported format) in the HTML link (graphic) window in the Frame dialog (double click on the frame handle). You can use a complete a URL, or just the filename (synth-evodone.gif), in which case the file must be in the same folder as the html file. ().Graphics frames positioned side by side in the HTML document with a small vertical offset will be placed side-by-side in the HTML document (if there is room on the page). Frames positioned vertically will be placed above one another. Similarly, all text will start at the left margin if the F or T position parameter is used, will be centered on the page if the M position parameter is used, and will be right-justified on the page if L position was specified in the PLT drawing.PLT LabelHTML Generated by PLTLeftF > This is a left-justified label <p>This is a left-justified label</p>CenterM > This is a centered label<p align=center>This is a centered label</p>RightL > This is right-justified<p align=right>This is right-justified</p>Embedding HTML TagsHTML tags can be included in text portions of the PLT drawing. These will be ignored when the PLT drawing is printed, and will not appear on the screen within PLT. The tags will, however, be placed in the HTML document. The tags must be placed between braces, using the format: {<tag>}. Everything between the braces, colored green below, will be included in the HTML document, but will otherwise be ignored. Thus if you want to include a link in your HTML document, it would appear as follows in the PLT label:"F > The {<a href="">} IUPAC {</a>}system of nomenclature allows assignment of unique names to all organic compounds."The link will appear in the HTML file as follows. The IUPAC system of nomenclature allows assignment of unique names to all organic compounds.In this way you can create effects not currently possible with PLT, such as a change of font in the middle of a sentence."F O = 4> This text will be normal {<font color="red" size=+1 face="Arial">} this text will be Arial red and one size larger {</font>} this text will be normal again when the HTML file is displayed." This label will appear in the HTML file as follows. This text will be normal this text will be Arial red and one size larger this text will be normal again when the HTML file is displayed Some other tags you might find useful:<hr>Produces a horizontal rule margin to margin (also a paragraph break)<small>...</small> <small> Designates smaller text </small><img src="red-ball.gif" border=0 alt="Picture of Red Ball" align=left> link to an image. The file "red-ball.gif" must be present in the same folder as the HTML filePLT to HTML Conversions???The PLT line-break marker {/} will be converted to the HTML line break tag <br>???The PLT paragraph break marker {//} will be converted to the HTML line break tag <p>???The PLT full-space symbol \ will be converted to HTML non-breaking space &nbsp;. This is useful for indenting paragraphs (the HTML browser does not recognize indenting by multiple spaces).???Greek characters like ^a for alpha will be coded as &alpha;???PLT special characters which do not appear in the symbol font or which do not have HTML equivalents will be inserted as a word in square brackets (^A ---> [Arrow]???The start and stop bold characters ^J and ^j are rendered as <b> and </b>???The start and stop italic characters ^I and ^i are rendered as <i> and </i>???The start and stop underline characters ^[ and ^] are rendered as <u> and </u>???Subscripts and superscripts |X and ~X are rendered as _X and ^X???"Keto" labels such as {KU=O} cannot be represented as HTML text. Such labels should be placed inside graphics frames for proper rendering.???HTML text does not support rotated text (Direction label parameter such as D = 90). Such labels can be incorporated into web pages only if they are placed in a graphics frame.ScalingScaling of HTML documents is handled the same as for printing. The size of fonts and graphics material is determined by the Print Scale Parameter. A Print Scale of 0.6 produces well-sized HTML web pages.Customizing the Web PageClick the Files | Publish as Web Page.. menu entry, and make appropriate selections in the dialog. All of these option settings (including the filename and path of the HTML pages) will be stored with the PLT drawing, so that if you add some material to the PLT drawing or fix an error you can easily create the webpage again without having to reset any properties.Type of HTML Page: There are three options here:Type 1: Standard HTML pages. This creates a single standard web page of HTML text (PLT drawing marked with Text frames) and GIF graphics (PLT drawing marked with graphics frames). Any material not marked with either a text or graphics frame will be ignored. For an example of a web page like this see: 2: Content panel index to series of web pages. This creates a series of HTML pages, with a new page starting at each Label with Style = 5 (Title). The Title label must be in a Text Frame - titles in Graphics frames will not be recognized. There will be a left content panel with links to each of the individual pages. The link names are the individual page titles. Material which is not in text or graphics frames will be skipped. For an example of a web page like this see: 3: Content panel index to series of GIF images. This creates a contents panel at the left side of the web page with links to a series of GIF images, each of which must be marked in the PLT drawing with a graphics frame. Each of these frames must contain at least one label with Style = 4 (Subheading). These labels will be the index entries in the contents panel. If there is more than one label with Style = 4, each one will appear in the contents frame. For an example of a web page like this see: : Three options here: Current page, All Pages, Or Page Range.Graphics Type: Always GIF – other formats not currently implemented.Options: Select from the option checkboxes to determine the appearance of the content frames.HTML Page Properties: There are a number of options here which allow you to change details of the HTML pages that will be produced. However, you must know something about HTML formatting before you can use this section. Only those options which apply to the Type of HTML page you have selected will be enabled. Click on each option button to see help information (Help), the default HTML code that will be used for the property (Default Code), and any modified code you have specified (Code). If the Code section is blank, then the default code will be used. If you wish to make a change in the default code, copy the material from the Default Code to the Code window, and make the changes (the Default Code window cannot be edited). If you want to suppress the default code (e.g. for the Signature at the bottom of the page, simply put some blank code in the Code window (e.g. <!-- -->).Styles in PLT-Generated HTML Pages. The last option in the HTML Page Properties frame is the HTML Styles button. Selecting this button allows you to redefine how the various PLT label styles will be rendered. The HTML-producing engine in PLT will convert all of the styles to appropriate tags, which will be applied to the labels. Thus if Style 5 (Y = 5) is named "Heading" and has the following definition (larger font size, bold, Arial font):H = 4.5 P = 2 O = 3A label in the PLT drawing with Y = 5 as below:"M Y = 5 > My Research"may be converted to the following HTML code:<p align=center><b><span style="font-size:18pt; font-family:Arial;">My Research</span></b></p>You can override this behavior by clicking on the appropriate line in the list box. The default HTML code for this style will be shown in the Default Code window, the PLT definition in the Help window, and any redefinition of this style in the Code window. You can place any new definition in the Code window. For example, say you want to use <h2>My Research</h2> rather than the rendering above for the "Heading" style: place the text <h2>|</h2> in the Code window.Similarly for any other styles you want to handle in your own way. Use a separator character "|" between the "pre" and "post" tags, as shown in the example. NOTE: If you do alter the HTML styles from their default values, then making changes in the PLT Styles will not change the corresponding HTML style - the code you have specified will be used irrespective of how the PLT style is defined.Producing the Web Page When you have finished adjusting the various options, click the Create HTML button and PLT will ask for a path and filename (say, MyDrawing.htm), and will then produce the single or multipage web site. The areas marked as Text Frames will become part of the HTML file, the areas marked with Graphics Frames will be converted to GIF files (using either names you have specified in the Frame Dialog, or if none is specified, sequentially numbered as MyDrawing{01}.gif, MyDrawing{02}.gif, etc), appropriately linked in the HTML file. Any areas not marked with frames, or areas marked with "Ignore" frames will be omitted. The HTML Properties dialog does not close automatically after the web page is created. This is so that you can view the page with your Web browser to see if everything is as you had intended. If not you can changes the properties as needed and create the page again.LimitationsThere are many features of web pages that are not currently supported by PLT. There is no provision for creating ordered lists or tables. Only relatively simple vertically flowing web pages can be created with PLT.HTML - Web Page TypePLT can produce a Web page using HTML-Frames, consisting of a left panel with a table of contents (a series of links), and a right panel which shows the material in the links. HTML Export as an Indexed Web Page Using Frames (Type 2)To create this type of web page the PLT drawing must have individual sections, each starting with a Title (a label with Style = 5). Place each heading and associated text material in Text Frames, and any graphic material in Graphics Frames. In the HTML Dialog set the Type of HTML Page radio button to Type 2. Click on the Create HTML button, and follow the prompts. PLT will go through the drawing, create a separate htm document for each section marked by a Title, and produce a table of contents (an index) to all of the web pages created.If The PLT document was called "name-reactions.plt" then the following files would be created:FilenameContentsname-reactions.htmthe Frameset - external links should be to this file. Double click on this file to view the web page.name-reactions-cont.htmthe links to the individual items - left panel of the Framesetname-reactions{01}.htmhtm code for the first section - this material will appear in the right panel of the framesetname-reactions{02}.htmetc.htm code for the second sectionname-reactions{01}.gifname-reactions{02}.gif etc.the first graphicthe second graphicHTML Export as an Index to a Series of Graphics Images (Type 3)PLT can also produce a simpler type of Web page using a Frameset: a left panel with a series of links to images (gif files), and a right panel to display them. Prepare a PLT drawing with a series of subheadings, (labels with Style=4), accompanied by graphic material. Place a Graphics Frame around the heading and associated graphics for each item. A frame can have more than one heading in it, each one will be separately indexed. A PLT page can have any number of frames in it.In the HTML Dialog set the Type of HTML Page radio button to Type 3. Click on the Create HTML button, and follow the prompts. PLT will produce a GIF image for each frame, and create in index of the frames. Below is shown a small PLT drawing with three items, labelled AIBN, Appel Salt, and Crypt[2.1.1]If the PLT file was called "Reagents.PLT" the following files will be produced from the PLT drawing:FilenameContentsreagents.htmthe Frameset - external links should be to this filereagents-cont.htmthe links to the individual itemsreagents{01}.gifreagents{02}.gif reagents{03}.gif the graphic for AIBNthe graphic for Appel's saltthe graphic for Crypt[2.1.1]The web page will appear as below:The Total Synthesis HTML pages (Type 4)This is a highly customized version of the Type 3 web page dedicated to producing the total synthesis web pages at the URL below: is intended for this purpose only, so a general description of Type 4 web pages is not given here, but this feature has made creation and maintenance of this very extensive chemical resource possible and even easy.ClipboardsImporting and Exporting Text Using the Windows ClipboardWhen working with PLT drawings you have available the Windows Clipboard for transferring text material (labels) from other programs into PLT (or vice versa). Even multi-line text can be copied into PLT. Use the normal Cut, Copy and Paste commands <ctrl-X>, <ctrl-C>, <ctrl-V>. Note that all PLT formatting codes within the label (italics, bold, subscript, superscript) are maintained in this process, but these codes will be meaningless in other programs and will have to be erased. Similarly, such formatting codes will not be copied from other programs into PLT.Exporting Windows PLT Drawings as Metafiles to the Windows Clipboard To paste complete PLT drawings into other Windows programs simply select Files | Export and select the framing method and type of file, or select one of the four preprogrammed menu items (e.g., Files | Export 1 [WMF Box Clip]). To paste part of a drawing, carefully frame the part structure in a MODIFY box using <Right-Mouse-Drag>, do a <Right-Mouse-Click> and select Make Frame from the pop-up menu. This places a Frame object on the screen. Right click on the red square at the lower left, and select from the menu.You can also directly copy the contents of the Modify box to the clipboard by selecting from the Files menu or pressing one of the export buttons (e.g., WMF-S Box Clip) on the MODIFY side menu. The image that you have captured will be shown on the screen so you can check content and framing. Switch to another program with <alt-TAB>, position the cursor, and import the structure (usually with a <ctrl-V> Paste command). The many line drawings in this Help file were imported from PLT as clipboard or disk WMF's. If you have selected EMF's rather than WMF's and the Options | Include PLT in EMFs menu option is checked, then a copy of the PLT drawing will be included in the EMF. The PLT drawing can then be copied back to PLT from the word processor or page design program. Note: if you edit the drawing within WordPerfect or Microsoft Word the PLT drawing included in the EMF may be lost. For this reason, and because MicroSoft may arbitrarily stop supporting such features (as it has in the past), it is not a good idea to rely on storage of PLT drawings within EMF’s.The PLT ClipboardLabels. WINPLT also maintains a private PLT-Clipboard format for copying labels and part structures between PLT drawings, and between programs that recognize the PLT format. To copy labels, click on the label, and press <ctrl-C>, move the cursor to a new location, and press <ctrl-V> to paste. All of the label properties will be duplicated.Spectra, Graphs, Images Boxes. These can be copied by clicking on the red handle (lower right corner) and pressing <ctrl-C>, and pasted elsewhere in a PLT drawing by pressing <ctrl-V>.Structures. To Cut, Copy and Paste PLT structures using the PLT-Clipboard place the structure in MODIFY using <Right-Mouse-Drag> or <alt-M>, press <ctrl-C> or use the Copy button, press <ESC> to exit MODIFY, move to another PLT drawing, or another place on the screen, and press <ctrl-V> or use the Paste button. This method can also be used to paste PLT structures into other programs if the Options | Make EMF Mod Copy menu option is checked.Pages. Entire pages of a multipage PLT drawing can be copied, cut and pasted. Select from the Edit | Copy Page menu or Right-Click on the PgUp button (bottom right of screen) and select from the menu. A copied page will be pasted (menu Insert | Paste) as a new page following the current one.PLT and WordPerfect for WindowsPLT and Microsoft WordImporting Images in PLTThree common types of Bitmap images (BMP, GIF and JPG) can be imported into PLT drawings. Windows Metafiles (WMF, EMF), a vector format, can also be imported. From the Insert menu select Image and follow the prompts.2. Place an image into the Windows clipboard using any other program (for example, a screen capture utility, or the very handy camera feature of PDF documents), switch to PLT, and press <c-V>. If you use this method, the image will be placed in your PLT drawing as an uncompressed BMP, and can be very large (megabytes). If you have many captures in a large document, the size of the PLT file can become unwieldy. A great reduction in size can be achieved by converting the BMP images to JPG: do a <Mouse-Right-Click> on the red dragging rectangle, select from the pop-up menu. For photographs, use JPG compression, for line drawings GIF may be fine.Images appear on the screen with a red square handle at the lower left corner. This handle can be dragged to position the image. Clicking the handle causes a blue handle to appear at the upper right corner of the image. This can be dragged to resize the picture (but the aspect ratio cannot be changed).0127000The images themselves cannot be edited in any way within PLT, except to resize and position them or convert BMP images to GIF or JPGs. If an image is selected in MAIN (click on the lower left red square) then clicking on the Label-side-panel increase/decrease buttons will change the height or width of the image.Below a PLT drawing containing an X-Ray ORTEP structure and a line drawing:Word and PLTPLT drawings are best incorporated into MicroSoft WORD for Windows using regular or Enhanced Windows Metafiles (WMF or EMF), although GIF, JPG and EPS files can also be used. Any portion of a PLT drawing can be converted to an EMF, using one of several framing options. We recommend using Frame Objects (draw a modify box with a <Mouse-Right-Drag>, do a <Right-Click> and select Make Frame from the menu). For optimum results, it is a good idea to produce the EMFs in PLT at the size (PLT scale) they will appear in the receiving document is printed. It is also important to avoid changing the aspect ratio (only if you have produced the PLT drawing with Font set to 0 (O = 0) can an EMF be scaled differentially in x and y without misplacing text).Incorporating an EMF into WORD. You can directly insert a picture into a WORD document with <ctrl-V> (for a Clipboard EMF) or Insert | Picture Menu (for a disk EMF). However, it is preferable to place the drawing in a WORD Frame, since Frames can be freely repositioned. Select the Insert | Frame menu and drag with the mouse to create a frame (usually make this the width of the page). Click inside the Frame, and select the Insert | Picture menu. Pictures can also be framed after they have been inserted (Format menu)Working with EMFs in MS WORD. You can change the size of a graphic in WORD by dragging the corner resizing handles. To avoid making changes in the x,y-aspect ratio, drag only the corner handles and not those in the middle of the rectangle sides. If you do accidentally distort a drawing, you can reset the natural dimensions in the Format | Picture menu dialog: click the Reset button. This dialog also allows setting of other options, such a Framing method, borders, etc. The actual content of Pictures in a WORD document can also be edited. Double-Click the picture. Labels and graphics can be moved, text can be edited, lines can be erased or added. You will not find it as user friendly as PLT, but sometimes minor changes can conveniently be made this way. Note that editing of Metafiles in this way may prevent the PLT structure from being copied back into PLT from Word.Copying PLT drawings back to PLT from Word. If the Options | Include PLT in EMFs menu option is checked, then a copy of the PLT drawing will be included in the EMF. You can then click on the drawing in Word, press <ctrl-C> to copy the metafile, switch to WINPLT and copy the structure back into PLT with full editing restored. Incorporating PLT structures into EMF's will increase the size of the graphics material by about 50%.WordPerfect and PLTPLT drawings are best incorporated into WordPerfect for Windows using Windows Metafiles (WMF or EMF), although GIF and EPS files can also be used. Because WordPerfect Versions 7 and 8 unacceptably distort the screen and printed appearance of EMFs, we recommend using WMFs only with WP. Any portion of a PLT drawing can be converted to a WMF, using one of several framing options. We recommend using Frame Objects (draw a modify box with a <Mouse-Right-Drag>, do a <Right-Click> and select Make Frame from the menu). WP can arbitrarily scale and distort WMFs. For optimum results, it is a good idea to produce the WMFs in PLT at the size (PLT scale) they will appear in the document. It is also important to avoid changing the Aspect Ratio (only if you have produced the PLT drawing with Font set to 0 (O = 0) can a WMF be scaled differentially in x and y).Setting up Word Perfect. There are several options in WordPerfect that improve the process if they are set correctly. In the WP Graphics | Graphics Styles menu dialog select the Box button and Image as the type. Click the Options button and select Setup from the menu and select the Default Template button. Return to the Graphics Styles dialog and set the following buttons:In Content dialog: select Preserve Image Width/Height Ratioin Position dialog: check Put Box in Current Paragraphin Wrap Text dialog: set Neither Side.in Size dialog: Set Width to full and Height to Maintain Proportions To add a WMF to a WordPerfect document, place the cursor at proper position in the document. It is a good idea to place the drawing at the end of a paragraph, after the carriage return (enter key). Memory WMFs: If you have prepared a memory WMF (Windows Clipboard) then you can directly paste the drawing into WordPerfect with <ctrl-V>. Disk WMFs. If you have prepared a disk WMF, click the drawing at the position you wish to paste the graphic, select the WP Graphics | Image menu, and locate the file using the Insert Image dialog. The drawing will usually be sized correctly (as in the PLT drawing that produced it). For disk metafiles you have the option to leave the file on disk (check the Image on Disk box in the Insert Image dialog), or incorporate them into the WordPerfect document. If you choose to leave images on disk, then they will be automatically updated if you make changes in the WMFs the next time you load the document into WP. If you choose to incorporate images, your document will be self-sufficient (easy to move to another computer) but will be much larger, and you will have to reincorporate the WMF's into the document each time you make changes or corrections in a PLT drawing.Copying PLT drawings back to PLT from Word-Perfect. This can only be done with EMFs, not with WMFs. If the Options | Include PLT in EMFs menu option is checked, then a copy of the PLT drawing will be included in the EMF. You can then click on the drawing in WordPerfect, press <ctrl-C> to copy the metafile, switch to WINPLT and copy the structure back into PLT with full editing restored. Incorporating PLT structures into WMF's will increase the size of the graphics material by about 50%. HYPERLINK \l "_Word_and_PLT" Word and PLTTutorialsAcetyleneAlkeneAlleneAngular MethylArrowsBezier CurveCopyingCyclohexanes CyclohexenoneCyclopentadieneCyclopentanoneCyclooctyneDithianeDioxolaneDockingFused RingsGrade Distribution GraphGreekKeteneKeto GroupsMethylenecyclopentaneNaphthaleneOrbitalsPentenePerspective DrawingPolygonsPolyeneRingsSine CurveSpiro RingsSteroidSulfone, SulfoxideTetralinTriple BondsSee: Drawing Lines, Double Bonds, StereochemistryFrequently Asked QuestionsHow do I copy structures within PLT?Select the structure you want to copy with a <Right-Mouse-Drag> then press <ctrl-C> to copy. Exit Modify with <ESC> or a <right-Left-Mouse-Click>, move the cursor to where you want to copy, and press <ctrl-V>. You can then drag the structure to its proper location and exit Modify with <ESC>.Can I copy PLT drawings back from Word Processors for additional editing?Yes, if you checked the Options | Include PLT in EMF menu entry. PLT drawings can no longer be placed in WMF's (Microsoft decided to stop supported this feature). Drawings prepared with other graphics programs cannot be copied into PLT, however, except as images.What is the difference between the DEL and X-Buttons?The DEL button (<E> or <DEL> keys) will delete the currently selected line, label, object or Modify segment. The X-button (<X> key) will delete individual lines or labels going backwards through the steps of the drawing.How can I place two labels at the same position? When you attempt to place a second label at the same spot as an existing label, you either replace or edit the existing one. A simple way is to move the cursor a set amount down (e.g., one bond length) using the arrow keys, prepare the label, and then move the label up the same amount with <shift-Cursor>. You can also place the two labels in MODIFY, and press both Modify Align Label buttons.When I press the smallest Screen Scale button I still cannot see the whole drawing.You can set values for the Screen Scale buttons in the Options | Screen Setup | ctrl-Zoom Scale menu. Alternatively, the View menu has a 15% scale setting, which is usually small enough.I want to rotate a label or change its size in increments smaller than the standard 15% increment.Place the label in a Modify Box (<Right-Mouse-Drag>), change the Increment with the Inc Button, and then use the Modify label parameter buttons.Sometimes I Double Click on a multiline label but nothing happens. You have to click on the first line of the label for PLT to find it (best to click near the label origin, otherwise PLT might find other close points.How can I permanently change the Modify Increment?The Increment Button in Modify only changes the increment temporarily, until you exit Modify. To change the value globally use the Options | Screen Setup | Modify Increment menu.How can I edit Label Styles?Use the Edit | Edit Style menu entry in the WRITE dialog, select a style to edit, and change label parameters and style name as desired.How can I add/remove fonts to/from the font menu?Use the Edit | Edit font menu entry in the WRITE dialog.When I produce Windows Metafiles with PLT and copy them into WORD or WordPerfect the Subscripts and Superscripts are often in the wrong position.EMF's can be formatted to look good on the screen or on the printer, but not always on both. PLT can produce either type. If you are going to print the document containing the metafiles, then use EMF-P or WMF-P (menu: File | Export). The image may not look quite right on the screen, but it will print perfectly. Why does PLT not put a copy of the drawing in the Windows Clipboard each time I press <ctrl-C> in Modify?You have to check the Options | Make EMF PLT Copy menu item for automatic preparation of WMF's each time you hit <ctrl-C>. This is an option because the kind of high quality Metafiles that PLT creates require a lot of computation. In fact, PLT actually goes through a complete phantom print operation to get the exact dimensions of all labels so they can be accurately placed. If your computer is sluggish, this may take a little too long for comfortable copying of the usual type, which is copying a PLT structure or label within PLT. Note that "copying" to the clipboard in this sense is really a misnomer - what is actually occurring is a print operation - translating a PLT drawing into the language Windows devices understand.How can I exactly connect two existing points in a drawing?First double-click near one point (the cursor should jump to the point). Then double-click near the second one. The cursor should jump to it, and there should be a dotted blue line connecting the two points. Now press <D> or do a <Right-Click> without moving the mouse.Does WINPLT have the following features:Produce Windows Metafiles? YesCopy drawings to Microsoft Word or Corel WordPerfect? Yes.Produce XY Graphs? YesIncorporate NMR spectra? YesIncorporate bitmap images? YesRead ChemDraw files? NoRead ChemWindow Files? NoMake PostScript files? Yes.Make transparent GIF files? Yes.Make JPG pictures? YesMake web pages? YesMake PDF files? Yes, provided you have a PDF printer driver (Adope PDFWriter or Distiller).Make TIFF files? Not directly, unless you have a TIFF printer driver (check out )Convert structure drawings to 3D images? NoCan one do substructure searches? No. PLT is chemically stupid.Text Searches? Yes.And Replace? Yes.Produce filled objects? Yes - arbitrary Bezier curves can be filled, as can circles, ellipses, rectangles and orbitals.Multiple fonts or font sizes in a single label? No, although Symbol characters can be inserted, and portions of a label can be made Bold, Italic or colored.Multipage drawings? Yes.OLE? No.Slide Show? Yes.Adjustable Options and Parameters Option Menu Toggles Show Page Boundary. Hide or show the printable area of the page as a dotted red line.Show Cursor XY. Show the current position (x,y coordinates) of the Mouse Cursor on the status bar.Show Grid. Show a grid on the drawing area. Select the type of grid in the menu, and the scaling of the grid in the menu.Include PLT in EMF. If this is checked then the PLT drawing information will be placed inside Windows Enhanced Metafiles. This allows the PLT drawing to be copied back from a Word Processing document into PLT.Move One Point Only. Usually all lines and labels meeting at one point are moved by a mouse drag. If this is checked then only single points or labels are moved.Show Handles. If this is checked then the red square “dragging handles” marking the bottom left corner of graphs, NMR spectra and Frames will be shown, otherwise these will be invisible. Turn this off if you want to do a screen capture, or don’t like red squares.Make WMF Mod Copy. If this option is checked, then PLT will always place a Windows Metafile in the clipboard every time a Cut or Copy operation of the Modify segment is done. The drawing can then be pasted into other programs.Adjustable Parameters Arrowhead Size Parameter. This scales the size of arrowheads.Arrow Length Parameter. This determines the length of an arrow when drawn unconstrained. Default length is 18 mm (2 bond lengths).Bond length Parameter. This sets the normal Bond length in mm. Leave this set to 9 mm unless you have a good reason to change it, since other dimensions such as the Double Bond Separation Parameter, the cursor size, and the Line Widths are set properly to match this value. The actual dimensions of a printed drawing can be easily set with the Printer Scale Parameter.Cursor Angle Parameter. The angle of a keyboard cursor move when the corner number pad keys are pressed. Usually set to 30 or 60 degrees. Toggle with the </> key.Cursor Length Parameter. The default size of a keyboard cursor move. This should usually be set to 1 mm, 3 mm or 9 mm, but other values can be useful. Use the <+> and <-> keys to change cursor length.Cursor Multiply Parameter. This is factor (default is 3) by which the cursor length changes when the <+> or <-> keys are pressed.Direction Parameter. This parameter defines the baseline rotation of the label (degrees counterclockwise from horizontal). Thus D = 90 will print along a vertical baseline.Double Bond Separation Parameter. This parameter specifies the distance, in mm, between the two lines of both types of double bonds (mid and left/right). Like all physical dimensions, this one will be scaled according to the Print Scale Parameter. Thus if Print Scale = 1, then the true dimension on the paper will be the one set.Down Line Type Parameter. This parameter allows you to select the Alternate Bond line type drawn when you press the <ctrl-D> key (stereochemistry down). The choices are Dashed, Hatched, alt-Hatch-Wedged.Font Number. This parameter sets the default font to be used for all labels. The font associated with each font number can be set in the Write Dialog (Edit menu). Font number can also be specified for individual labels.Font Color. This parameter sets the default color to be used for all labels. Font color can also be specified for individual labels, and for parts of labels.Framing Margin Parameter. This defines the border (in mm) which will be added over the minimal dimension needed to enclose a drawing when a Windows Metafile is being produced.Grid (mm) Parameter. This parameter sets the distance between grid points or lines in mm.Grid Type Parameter. Use this parameter to select the type of grid to be displayed. The options are Dots (a dot at each grid point), Lines (a square ruled grid, DotsScaled (dots, with the distance scaled to printer dimensions), and Lines Scaled. Turn the grid display on and off in the menu. Hatched Bond Separation Parameter. This specifies the separation (in mm) between the individual lines of a Hatched bond.Hidden Line Cut (mm). This is the length of the cut made by PLT when crossing lines are cleared with the <SPACE BAR> key.Left/Right Double Length Parameter. This parameter defines the relative length of the line of a Left/Right double bond (default is 0.8).Letter Breadth Parameter. This parameter defines the relative character width (1 = normal width). Useful mainly for some of the special characters such as circle (^C), box (^B) and orbitals (^X to ^Z). This parameter is only active with the Graphics Font (fOnt = 0).Letter Height Parameter. This parameter sets the size of text characters in mm (the height is the size of a normal full height character such as "N"). The size of characters is also affected by the Relative Height Parameter. Like all physical dimensions, this one will be scaled according to the Print Scale Parameter. Thus if Print Scale = 1, then the true dimension on the paper will be the one set. Letter Height is saved with the drawing – it is a document property.Line Length Parameter. This parameter determines the maximum length in mm of a text line before it will be word-wrapped by PLT. The parameter can be set for the current label, or globally in the menu (to make the change permanent, save the changes). Like all dimensions, this one will be scaled according to the Print Scale Parameter. Thus if Print Scale = 1, then the true dimension on the paper will be the set Line Length. Line Length is saved with the drawing - it is a page property.Line Spacing Parameter. This parameter determines the line separation in mm between successive lines of text produced by word-wrapping of long lines, or when a line feed is forced with a {/} or {//} braces tag. The parameter can be set for the current label, or globally in the menu (to make the change permanent, save the changes). Like all dimensions, this one will be scaled according to the Print Scale Parameter. Thus if Print Scale = 1, then the true dimension on the paper will be the Line Spacing. Line Spacing is saved with the drawing - it is a page property.Linewidth Parameters. There are five of these: Extra Thin, Thin, Normal, Thick and Extra Thick. These values are all relative to each other, with normal linewidth set to 1.0. There is also a Relative Linewidth parameter which scales all of these.Modify Increment Parameter (%, Deg). This is the fractional change (or degrees rotation) for each click of the Modify and Label edit buttons.Normal Scale Parameter. This is the default screen scale.Print Black on White Parameter. This specifies whether printed output should be converted to black and white (background color white, all other colors black) to avoid grey-scaling of colored materials on black and white printers (set in Print Setup Dialog).Print Direction. Page orientation: Landscape or Portrait (set in Print Setup Dialog).Print Drawing Name. If this option in the Dialog is checked then PLT will print a brief description at the bottom of the drawing giving the file name, date, print scale, and font size. In the unregistered version, this feature prints some additional material, and cannot be turned off (set in Print Setup Dialog).Print Scale Parameter. This parameter scales the drawing for all output devices: standard windows printers and plotters, Windows Metafiles, bitmaps, GIFS and HTML pages. Print scale can be set in the Options | Print Options menu, or by changing the paper size in the File | Print Setup.. dialog. Print Scale is saved with the drawing - it is a page property.All physical dimensions will be scaled according to the Print Scale Parameter. Thus if Print Scale = 1 the true dimension on the paper will be the values in mm set for Bond length, text size, and all other physical dimensions.Relative Letter Height Parameter. This parameter changes the size of text characters - the size set by the Letter Height Parameter is multiplied by the Relative Height value. Like all physical dimensions, this one will be scaled according to the Print Scale Parameter. Thus if Print Scale = 1, then the true dimension on the paper will be the one set.Relative Line Width Parameter. This scales the line width for all lines in the drawing. The parameter can only be set globally.Scale mm to Printer. This toggle is used to define whether distances in a Scale (Insert | Scale menu) refer to unscaled or print-scale (paper) dimensions. In other words, if the toggle is set to No and Print scale = 0.5 then the paper dimensions (after printing) will be half of the values specified. If the toggle is set to PrintScl then the printed Scale will be the dimensions specified, provided that it is printed at the same print scale as when it was created.Sup/Subscript Size Parameter. This parameter determines the relative size of super- and subscript characters.Sup/Subscript Vertical Offset. The amount that a super or subscript is offset above and below the label baseline, in fraction of the letter height.Triple Bond Separation Parameter. This parameter specifies the separation between the lines of a triple bond (in mm).Wedge Angle Parameter. This specifies (in degrees) the wedge angle of a normal wedged bond. There is also a Thin Wedge Parameter which specifies the angle of the thin wedged bond.Up Line Type Parameter. This parameter allows you to select the Alternate Bond line type drawn when you press the <ctrl-U> key (stereochemistry up). The choices are Wedge, Thin-Wedge, and Bold.Zoom Scale Parameter. This is the screen scale set when <Z> is pressed, equivalent to the second largest Zoom button scale.Ctrl Scale Parameter. This is the screen scale set when <ctrl-Z> is pressed, equivalent to the second smallest Zoom button scale.Alt Scale Parameter. This is the screen scale set when <alt-Z> is pressed, equivalent to the largest Zoom button scale.Version ChangesChanges in Version 7.1.19 from 7.1.18 (April 2018)MOUSE drags: Only horizontal if <shft> key down, only horizontal of <alt> key down.Removed requirement for THREED32.OCXHTML: Added code to allow GIF frames to be side-by-side (X2-X1 > 400Changes in Version 7.1.18 from 7.1.17 (October 2012)GRAPH: Can now select line type "Bar graph" to make a primitive bar gaph. Can also convert a list of numbers (i.e. grades to make a grade distributions (for teachers).SEARCH and REPLACE: PLT now remembers the last 10 searches (even between sessions).NAVIGATION: the key stroke <a-V> will scroll through the currently open PLT drawings (some interference from Windows - <a-V> might also drop the View menu, but the drawing will be switched anyway).PAGE NAVIGATION: If you have been using Style=5 for main headings and Style=4 for subheadings in a multipage PLT document, click on the Titles button (Upper right) to get a list, double click on item to go to it. Similarly for the Pages button, useful only if you have given your pages titles.BOX OBJECT: a new object has been added, a rectangular box. The box can be moved and resized just like graphs or NMR spectra, it can have an outline of any color, and can be filled with any color. IMAGES: Bitmap images which have been pasted into PLT drawings can be very large. They can be easily compressed to JPG or GIF within PLT - right-click on the image drag box, select from menu.MOUSE WHEEL: some support has been added to scroll the screen horizontally. If hold down the <alt> key, then scrolling is horizontal, whereas holding down the <ctrl> key causes zooming.MOUSE DRAG: Horizontal and vertical drags when holding <ctrl> or <alt> key down.Changes in Version 7.1.17 from 7.1.16 (October 2010)SLIDESHOW: If place the word "SKIP" inside a slideshow frame with style = 8 (Y = 8) then that frame will be skipped during presentation of the slideshow. This allows easy editing of slideshow contents (just by dragging the "SKIP" label into or out of a frame. SPECTRA: Infrared and Mass spectra can be imported from the NIST web site (). Changes in Version 7.1.16 from 7.1.15 (July 2010)SLIDESHOW: Added frame "Slide name". During a frame-based slideshow double click to get menu of slide names for jumping to another location. When double click on the screen again get a popup menu, the top entry will be the page you came from (so you can continue the slide show where you jumped out of it).SLIDESHOW: Conversion of a frame-based slide show to a new plt drawing containing only the slide show material, for printing or converting to pdf (press <P> during a slideshow).WRITE: Added Date and Color to the Format menu in the Write dialog (for changing color within labels, or adding the current date). Click on the menu entry, and follow the prompt (select a color number, or a date format). You can also design your own date format by changing the yy mm dd codes.EXPORT: Support for exporting JPG files (in addition to BMP and GIF). This requires a new support file FreeImage.dll.Changes in Version 7.1.15 from 7.1.14 (Dec 2009)WRITE: Added {//} for space-and-a-half paragraph break within a label ({/} has long given a single space break)MODIFY: Added "Frame dialog” to Modify-Rt-Click menu - so can more easily make special frames for web pagesMODIFY: Added "Make Box" to Modify-Rt-Click menuAdded "Edit" button to Search-replaceAdded slider to Page navigation bar, and made it work in both Main and ViewNMPSPEC: Added Change vert scale to NMR spec right click/NMR Mod rt click. This changes the height of a spectrum without changing the size of the spectrum box, in contrast to ChangeSpectHt which increases the spectrum height by increasing the box size. This is a subtle difference, but can be useful sometimesPage number and page number format changes can be made in the middle of a document (new dialog in Options menu). This allows different parts of a multipage document to start page numbers over again, or skip numbers.WRITE: Labels of all types respond instantly to the +/- buttons for label Height, Line length and Line spaceOBJECTS: Made all objects (spectra, graphs, frames, images, scales and, of course, labels) responsive to increase/decrease height and width label keys in the main Labels-Side-panel in MAIN and MODIFY. SCROLLING: Added scrolling when drag the mouse on a blank part of the screen in MAIN (screen will also scroll during a modify drag if the cursor hits the boundary)HTML – added lots of custom code for preparing Total Synthesis web pages – Type 4Changes in Version 7.1.13 from 7.1.12 (May 2007)NMRSPEC: Added baseline tilt Left/RightNMRSPEC; added ctrl-Up, ctrl-Down, ctrl-Left, ctrl-Right for raising, lowering and tilting baseline.Added Subscript/Superscript/TAB/CRLF processing to clipboard text pasteNMRSPEC: Made smarter peak pick format - <5 ppm 0.000; <20 ppm 0.00, else 0.0GRAPH: added scroll bar for proper viewing of graphWRITE: Added color within label {C=9}text{C} will print text using color 9 Changes in Version 7.1.12 from 7.1.11 (Dec 2005)Added line smoothing for nicer BMP and GIF bitmaps. Line smoothing is always on for SlideShow and for HTML GIFs, can be turned on/off for exporting BMPs and GIFsNMRSPEC: Added "Convert Section to Spectrum" to Section Menu NMRSPEC: Made smarter peak pick format - <5ppm 0.000; <20ppm 0.00, else 0.0 NMRSPEC: Added baseline raise/lower NMRSPEC: Added Clip Spectrum to current limits Files: can no longer open same file twice Text in WRITE now stays highlighted after bold/itallic so can apply both easily Made search text highlighted when reentering Search/replace When SearchText is selected, then enter key will be same as clicking search button<F3> key will do next search in Search/replace When page-index is selected, DEL key will work to delete page Added <ctrl-ENTER> and <alt-ENTER> to split page horizontally and vertically No warning when delete Modify segment - recover with undo.Changes in Version 7.1.11 from 7.1.10 (Dec 2004)HTML: extensive upgrade of HTML generation - now controlled by a dialog which allows a number of features to be customizedFind and replace now called with <ctrl-F> key, search again is <F3>. The dialog is now non-modal (always on top) so drawing can be edited while maintaining an active search.The Flip key and button <ctrl-F> is now the Switch key <ctrl-S>Frame Slideshow: can now specify a title for each frame of a slideshow in Frame dialog (double-click on frame handle).Increased capacity in file menu of previously opened files from 9 to 14.Can now have 14 open documents.Can now copy Bitmaps (DIB AND BMP) from clipboard into PLT.File View: now go to currently viewed page on load (unless viewing page 1, when it goes to the previously set current page)Two parameters: Line Separation and Line Length can now be set globally for all pages of a PLT drawing (Options | Letter Parameters, click the Set all pages check box).Print Scale parameter can now be set globally for all pages of a PLT drawing (Options | Print Options, click the Set all pages check box).The three previously used printers can be selected from a list box.Changes in Version 7.1.10 from 7.1.9 (April 2004)Printing: Added the ability to print multipage PDF files (if PDF printer is available). Previously only single-page PDF files could be printed.Printing: Added the ability to print a range of pages, in addition to current page and all pages.NMRSPEC: Added create peak pick listWRITE: Added <alt-Z> and <alt-Q> to Write dialog for Sub/Sup conversion of selected textAdded "make Page Name" to Right click page menuHTML: Added HTML-Link to Frame properties (link a gif to another URL)Allow frames to be Top Down (origin at top left), added FrameFlipVert to FrameRightClick menu to allow conversion of bottom-left to top-left framesMade Letter Height a Document Property (in addition to a label property)Changes in Version 7.1.9 from 7.1.7 (Jan 2003)Added Frame-Based Slide Show.NMRSPEC - Added import Aldrich Spectral Viewer NMR spectra.Added Page Numbering and page offsetAdded new Arrow Length ParameterAdded Document properties dialog for deleting/rearranging pages of a PLT doc [NOT IN HELP??]NMRSPEC - Added Set Hz/cm to Modify-RtClickNMRSPEC - Changed Modify-RtClick: Add/remove individual NMR togglesNMRSPEC - Added sliders to screenNMRSPEC - Added AutoAxes button and removed AutoAxes CheckboxChanges in Version 7.1.7 from 7.1.6 (Jan 2002)Added import NUTS type 3 NMR spectra (including inserts, integrations and peak picksIncreased number of entries in Quick-label pull down [NOT IN HELP]Removed warning dialogs for Delete NMR spectra, Graphs, Frames and Images. Can recover these with UNDO.Removed warnings for Delete Docking labels (\\) in Main. Can recover with Undo.Changes in Version 7.1.6 from 7.1.5 (Nov 2001)Added SlideShowIncreased Page number panel to 60Add Page Name by Right Click on existing labelAdded Tooltip for Page Name on PageNumber panelAdded Print multiple pages per page: 2, 4 and 6 pages per pageAdded "Decimal Label" to Right-Click on label pop-up menuNMRSPEC: Added Peak picking Hz or ppm - use Right Mouse Drag Changes in mouse-dragging of graphs, spectra and frames Added single-page or multi-page search and replaceChanges in Version 7.1.5 from 7.1.3 (May 2001)Major Upgrade to HTML file preparation.Incorporation of graphics files into PLT drawings (JPEG, BMP, GIF, WMF, EMF). Added DataSet converter to Graph (using evaluate) [NOT in HELP]Changed Write dialog so green cross-hairs move depending on FMLT setting for label. Added special character bar to Write dialog. Added multiple undo/redoAdded an acetylene button to the Extended Bisect buttons to add properly formatted acetylenes at the end of a line (or a line at the end of acetylene.Changes in Version 7.1.3 from 7.1.2 (August 2000)Added the feature: hold down the <ctrl> key during a click on the Zoom button to center the page on the screen.Create HTML pages.Multipage drawings.Added "Edit Traced spectrum" to edit menu in NMRSPECChanged "Close Drawing" and "Exit Windows” warning to standard Windows (Yes / No / Cancel).Set up four Export types in File Menu. The same four types appear in the "right-click on a frame" dialog, with frame as the bounding option.Added DeltaG and FirstOrder utility dialogs to Tools Menu.Changes in Version 7.1.2 from 7.1.1 (May 2000)Increased maximum number of points in NMR spectra before point averaging occurs to 18,000 Show chemical shift markers for NMR simulations imported from WINDNMRAllow export of NMR spectra from PLT to WINDNMRNMRSPEC: Added Integrals and section expansionsIncrease maximum number of steps from 1500 to 2000Changes in Version 7.1.1 from 7.0d (September 1999)Changed to new VB-run files - to allow EXE’s created under Win 98 to be run on Win 95 and NT computers. Compatibility problem created by Microsoft.Fixed double-click problem when opening Write-NMR-Graph dialogs).Added star to Orbital Wizard,Added Date and time display.Revised Export - now a call to Export dialog rather than numerous File menu entries. Set up two export types in Files menu.Added Transparent/Opaque and Printer/Screen choices for GIF files.Changes in Version 7.0d from 7.0c (April 1999)Added Clipboard paste of x,y data to Graph Edit DataAdded delete, rename and close buttons to File ViewMerged PLT and Windnmr printing/graphics capabilitiesThe size of Graphs, NMR Spectra or Frames can be changed in the MAIN dialog by clicking on the origin (red square) and then dragging the blue square at the top-right of the enclosing box.Changes in Version 7.0c from 7.0b (November 1998)Changed stereochemical dot to filled circle for better centeringAdded NUTS spectrum format,Added integration and section expansions to NMR dialogAdded user control of BottomText in Print Setup dialogFrames have been added. Create Frames by selecting from the <Right-Click> menu in Modify. Frames are a way of permanently identifying a rectangular area of a drawing. One use is for framing portions of a drawing to be exported as WMF, EMF, GIF or EPF files. <Right-Click> on the red square at the origin of the Frame for a menu of options. To resize the frame, drag the red origin or blue top-right corner.Changes in Version 7.0b from 7.0a (August 1998)Added Orbital Wizard for creation and editing of orbitals, rectangles, circles , stars and trianglesAbility to "trace" NMR spectra into PLT drawings. Scan an NMR spectrum as black and white GIF or BMP file, and load it into PLT using the Insert |Trace Bitmap NMR menu.Many of the dialogs can be resized to make room for long filenames, etc.Drag the right edgeChanges in Version 7.0a (June 1998) Conversion to 32-bit codeAn additional screen display scale has been added - extra smallOne more line thickness has been added (extra thin)The width of the various line thickness types can be set in the Options | Line Drawing menu.Several dimensions of Altbond types (triple bond line separation, wedge angle, hatch bond line separation) can be set in the Options | Line Drawing menu.Can align all points in the Modify segment vertically or horizontally (use <Right-Click> menu). Use Carefully!Added .=/: positioning to labels for vertical alignment.Added Postscript ExportChanged Bottomtext so it is no longer formatted - prints "as is" to avoid PLT-style formatting of reserved "\~^|_" charactersGraph markers, revised, Marker name can be edited, and marker names and label type saved to INI. Added "Read Marks from INI file" to Edit menu in GraphAdded NMR Spectra folder to File OptionsChanges in Version 6.10g from 6.10i (December 1997)A variety of options for Bezier curves have been added: arrows at one or both ends, dashed, dotted or filled Beziers. Click on the Bezier curve button and select from the menu.Changes in Version 6.10i from 6.10d (October 1997)Added Make Upper/Lower case to the edit menu in Write<Right-Click> on the Load button, Save As button or File View button gives the Save To/Load From menu of folders for direct access to frequently used drives/folders.A new entry in the Options menu Make WMF Mod Copy allows automatic preparation of clipboard WMF's whenever a Modify Copy operation (<ctrl-C>) is performed. This option should be checked only in fast computers, since otherwise preparation of the WMF can make PLT-copy operations sluggish.A PrintSetup dialog has been added to print preview.Linewidth definitions can be set in INI file.Crash protection has been added. If PLT is exited abnormally, either by a system crash or shutdown, or by an internal PLT error, all PLT files currently being edited can be recovered when PLT is next started. A backup is made every five minutes.A facility for including NMR spectra in PLT drawings has been added. Contact the Author for more information.Changes in Version 6.10d from 6.10c (March 1997)In some systems change of Landscape-Portrait orientation did not work. This has now been fixed (if the printer orientation cannot be changed, the drawing is rotated 90 degrees by PLT).A <Right-Click> on a label in MAIN gives a popup-menu, with several entries for changing labels.Changes in Version 6.10c from 6.10b (Feb. 1997)Dioxolane and Dithiane have been added to the alt-Y-Spiro menu.A <Right-Click> popup-menu has been added to Modify, with the entries Exit, WMF, Erase, Text-Label Position, First-Label Position, Middle-Label Position, and Last-Label Position.The keystroke <ctrl-T> in Modify has been added to convert all labels in Modify segment to Text label position.ASCII text files with a list of x,y coordinate pairs can be loaded into the PLT Graph routine.There is now only one Clipboard in PLT. Text material can be directly copied from other programs into MAIN in PLT. Line breaks will be added if they were present in the original text.Windows Metafiles can include PLT structures, so that drawings can be copied back into PLT with full editing restored.Changes in Version 6.10b from 6.10a (Jan. 1997)Valence violation on fusion of benzene rings (e.g., to make naphthalenes) has been fixed.A simple report generator has been added to the Graph utility.An Edit Color menu has been added, which allows selection of arbitrary colors for each of the 16 color numbers.A Print Black on White check box has been added to the Print Setup and Edit Colors Dialogs. This allows proper black and white printing of colored PLT drawings (background color = WHITE, all other colors=BLACK) .Errors and Changes in PLT Manual None currentlyKnown Bugs and ProblemsSave Often. Even a very carefully constructed program like PLT can fail.BugsGRAPH: can't change format of Y-axis numbers by changing Y-Caption format (rotate problem).ProblemsThe line length of labels on screen is not the same as on paper, especially at small scale (e.g., Print Setup). This has to do with pixel-resolution issues, and will be hard to correct. Remember that the larger the scale, the more accurately the screen representation of text material will reflect the printed output. HLP: In the pop-up help (Right-mouse-click on buttons), if you click on green marked text (hypertext jump), you get an error (Out of Memory). There seems to be no permanent damage. The only current solution is: Don't do that. PLT does not control the Windows Help engine.Printing: currently the Print Setup Dialog changes the default system printer.Missing Features and Wish ListMissing Features in PLT ( let us know which these are crucial)?Font changes within label?Set Letter breadth for True Type Fonts.?Graphics fonts 1 and 2 are not implemented.?Cannot make HPGL filesWish List (let us know which these are important to you)Interconversion of PLT with other chemical structure formats.More options for file type (in addition to *.*, *.plt, *.tem). Could be INI file option.Increase/decrease buttons - fast change if button held down.Box with drop shadow.Set number of steps for circle and other curves.More efficient way to draw ellipses.Larger number of steps.Subscript and Superscript buttons in WRITE dialog.Indicator for when point is selected (like the line highlight)User control of button location.Display cursor location in Polar coordinates (instead of Cartesian).Last line and angle feature.For info about PLT contact: Hans J. Reich, Reich@chem.wisc.eduGlossaryAcetyleneAlkeneAlleneAlt-Zoom Scale ParameterThis is the screen scale set when <alt-Z> is pressed, equivalent to the largest Zoom button scale.Angular MethylArrowsAuthorHans J. Reich514 Edward St.Madison, WI 53706USAEmail: reich@chem.wisc.eduInet: chem.wisc.edu/areas/reich/index.htmBezier CurveBig Tick Size ParameterThis sets the physical size in mm of the major tickmarks in a graph. Like all physical dimensions, this one will be scaled according to the Print Scale Parameter. Thus if Print Scale = 1, then the true dimension on the paper will be the one set.Bond length ParameterThis sets the normal Bond length in mm. Leave this set to 9 mm unless you have a good reason to change it, since other dimensions such as the Double Bond Separation Parameter, the cursor size, and the Line Widths are set properly to match this value. The actual dimensions of a printed drawing can be easily set with the Printer Scale Parameter.Chair CylohexaneCtrl-Zoom Scale ParameterThis is the screen scale set when <c-Z> is pressed, equivalent to the smallest Zoom button scale.Cursor Length ParameterThe default size of a keyboard cursor move. This should usually be set to 1 mm, 3 mm or 9 mm, but other values can be useful. Use the <+> and <-> keys to change cursor length.Cursor Multiply ParameterThis is factor (default is 3) by which the cursor length changes when the <+> or <-> keys are pressed.CyclohexeneCyclohexenoneCyclooctyneCyclopentadieneCyclopentanoneDioxolaneDirection ParameterThis parameter defines the baseline rotation of the label (degrees counterclockwise from horizontal). Thus D = 90 will print along a vertical baseline.DithianeDouble Bond Separation ParameterThis parameter specifies the distance, in mm, between the two lines of both types of double bonds (mid and left/right). This parameter also controls the distance between the lines of triple bonds. Like all physical dimensions, this one will be scaled according to the Print Scale Parameter. Thus if Print Scale = 1, then the true dimension on the paper will be the one set.Down Line Type ParameterThis parameter allows you to select the Alternate Bond line type drawn when you press the <ctrl-D>key (stereochemistry down). The choices are Dashed, Hatched, alt-Hatch-Wedged.First X Tick ParameterThis sets the physical offset (from the left edge) in mm of the beginning of the X-scale. Like all physical dimensions, this one will be scaled according to the Print Scale Parameter. Thus if Print Scale = 1, then the true dimension on the paper will be the one set.Framing Margin ParameterThis defines the border (in mm) which will be added over the minimal dimension needed to enclose a drawing when a Windows Metafile is being produced.Graphics FontsPLT uses a set of stroked characters defined by the PLT2{p}.DAT file when text is printed with fOnt=0, 1 and 2. Font=0 is used for many of the special characters which are not present in normal fonts.Grid (mm) ParameterThis parameter sets the distance between grid points or lines in mm.Grid Type ParameterUse this parameter to select the type of grid to be displayed. The options are Dots (A dot at each grid point), Lines (a square ruled grid, DotsScaled (dots, with the distance scaled to printer dimensions), and Lines Scaled. Turn Grid Display on and off in the Options | Show Grid menu.Label Breadth ParameterThis parameter will change the height to width ratio of the characters in a label. Most useful for special characters such as ^C (circle) for making ovals, and for changing the shape of the orbital characters (^X, ^Y, ^Z).Label PositionEach PLT label is assigned a Label Position: Left, Middle (centered), Right, or Text (F, M, L, T) which defines the position of the label with respect to its set point.Left/Right Double Length ParameterThis parameter defines the relative length of the line of a Left/Right double bond (default is 0.8).Letter Breadth ParameterThis parameter defines the relative character width (1 = normal width). Useful mainly for some of the special characters such as circle (^C), box (^B) and orbitals (^X to ^Z). This parameter is only active with fOnt = 0.Letter Height ParameterThis parameter sets the size of text characters in mm (the height is the size of a normal full height character such as "N"). The size of characters is also affected by the Relative Height Parameter. Like all physical dimensions, this one will be scaled according to the Print Scale Parameter. Thus if Print Scale = 1, then the true dimension on the paper will be the one set.Line Length ParameterThis parameter determines the maximum length in mm of a text line before it will be word-wrapped by PLT. The parameter can be set for the current label, or globally in the Options menu (to make the change permanent, save the changes). Like all dimensions, this one will be scaled according to the Print Scale Parameter. Thus if Print Scale = 1, then the true dimension on the paper will be the set Line Length.Line Spacing ParameterThis parameter determines the line separation in mm between successive lines of text produced by word-wrapping of long lines, or when a line feed is forced with a {/} braces command. The parameter can be set for the current label, or globally in the Options menu (to make the change permanent, save the changes). Like all dimensions, this one will be scaled according to the Print Scale Parameter. Thus if Print Scale = 1, then the true dimension on the paper will be the Line Spacing.MethylenecyclopentaneModify Increment Parameter (%,Deg)Modify Increment Parameter (%,Deg). This is the fractional change (or degrees rotation) for each click of the Modify and Label edit buttons.NaphthaleneNormal Scale ParameterThis is the default screen scale.Orbital - fancyOrbital - plainOrbital - shadedPentenePerspective DrawingPrint Black on WhiteIf this option in the Print Setup Dialog is checked then PLT will print the background in white, and all other colors will be printed black, no matter what the color assignments are. This allows colored PLT drawings to be printed on both color and black and white printers without editing of the colors.Print Drawing NameIf this option in the Print Setup Dialog is checked then PLT will print a brief description at the bottom of the drawing giving the file name, date, print scale, and font size. In the Demo version, this feature prints some additional material, and cannot be turned off.Print Scale ParameterThis parameter scales the drawing for all output devices: standard windows printers and plotters, or Windows Metafiles. Print scale can be set in the Options | Print Parameters menu, or by changing the paper size in the Files | Print Setup .. dialog.All physical dimensions will be scaled according to the Print Scale Parameter. Thus if Print Scale = 1 the true dimension on the paper will be the values in mm set for Bond length, text size, and all other physical dimensions.Relative Height ParameterThis parameter changes the size of text characters - the size set by the Letter Height Parameter is multiplied by the Relative Height value. Like all physical dimensions, this one will be scaled according to the Print Scale Parameter. Thus if Print Scale = 1, then the true dimension on the paper will be the one set.Relative Line Width ParameterThis scales the line width of the entire drawing. The parameter can only be set globally.Scale mm to PrinterThis toggle is used to define whether distances in a Scale (Insert menu) refer to unscaled or print-scale (paper) dimensions. In other words, if the toggle is set to No and Printscale = 0.5 then the paper dimensions (after printing) will be half of the values specified.. If the toggle is set to PrintScl then the printed Scale-Kurve will be the dimensions specified, provided that it is printed at the same prints cale as when it was created.Small Tick Size ParameterThis sets the physical size in mm of the minor tick marks in a graph. Like all physical dimensions, this one will be scaled according to the Print Scale Parameter. Thus if Print Scale = 1, then the true dimension on the paper will be the one set.Small Ticks per Big Tick ParameterFor graphs, this sets the number of minor tick divisions between each major tick on the X or Y axis.Sulfone, SulfoxideSup/Subscript Size ParameterThis parameter determines the relative size of super and subscript characters.Up Line Type ParameterThis parameter allows you to select the Alternate Bond line type drawn when you press the <ctrl-U> key (stereochemistry up). The choices are Wedge, Thin-Wedge, and Bold.X-Axis Width ParameterThis parameter sets the physical horizontal dimension of the graph in mm. Like all physical dimensions, this one will be scaled according to the Print Scale Parameter. Thus if Print Scale = 1, then the true dimension on the paper will be the one set.Zoom Scale ParameterZoom Scale Parameter. This is the screen scale set when <Z> is pressed, equivalent to the second largest Zoom button scale. ................
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