In general, the SAS macro language is portable across operating environments. This section discusses those components of the macro facility that have system dependencies. For more information, see the SAS Macro Language: Reference and SAS Language Reference: Dictionary .
Note: The words CON, NUL, PRN, COM1 through COM9, and LPT1 through LPT9 are reserved words under Windows. Do not use these reserved words as the name of a macro variable.