SD - The Open Source Multivalue String Database

Format:  ARG(arg.number) 

If your declare a function using the VAR.ARGS option

FUNCTION ADDRESS(CITY,STATE,ZIP) VAR.ARGS

A=ARG(1)  A will equal CITY
C=ARG(3) C will equal ZIP

Invalid values for arg.number will cause the program to abort.

SD Basic Functions - ARG()

OpenQM 2.6.6 documentation for this command is available here.  The OpenQM documentation may provide additional context for this command.  However, some features in SD have been modified so the OpenQM information may not be 100% applicable to SD.