True funtions are avaiable in SAS

In IML In C In Macro Language In macro + datastep

SCL is not the only place to find 'functions'. The last two 'functions' are avail in base SAS. The macro can be compiled and completely hidden from the user. In this case the user would see only the datastep code.

Consider ( from memory )

data doit;

arg1 = 1; arg2 =2;

doit = diff ( arg1, arg2 );

run;

%macro diff ( var1, var2) / stmt;

&var2 - &var1

%mend diff;

Roger J DeAngelis CompuCraft Inc XLR82SAS@aol.com ( Accelerate to SAS ) http://members.aol.com/xlr82sas/utl.html