Introduction to SAS

Variable names: Variable names may be one through eight characters in length. All variable names must begin with an alphabetic character (A-Z, a-z) or an underscore (_). Subsequent characters may include digits. A variable list such as Vl-V5 means V1, V2, V3, V4, and V5. SAS matches variable names precisely character-wise, but not case-wise. ................
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