Macro functions enable you to manipulate text strings that SAS inserts in your code.When you submit a program, SAS executes the macro functions before the program compiles. To use a macro function, ...

In general, a macro language function processes one or more arguments and produces a result. You can use all macro functions in both macro definitions and open code. Macro functions include character ...

If the value of an argument is invalid, SAS prints an error message and sets the result to a missing value. Here are some common restrictions on function arguments ...