Cygwin setup for C, C++ and Fortran compilation

Close all Fv windows and return to your BASH window. Again, type f2dhisto acisf01512N001_evt2.fits at the prompt. This time, enter casout for the output filename, 1 for each binsize, X and Y for the column names; finally, try 3100.0,3800.0 for the X-RANGE and 3250.0,3950.0 for the Y-RANGE. ................
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