Passing Information into a Macro Using Parameters
You have seen
the basic form for a macro definition. Your macros will often contain
macro variables. To make your macros more dynamic, you could use the
%LET statement to update the values of the macro variables that are
used within the macros. However, parameter lists in your macro definitions
enable you to update the macro variables within your macro programs
more conveniently. A parameter list is
an optional part of the %MACRO statement that names one or more macro
variables whose values you specify when you create or call the macro.
Macros That Include Positional Parameters
When you include positional parameters in a macro definition, a macro variable is automatically created for each ...