Initialize a new va_list string, this subroutine does the required magic to properly init a new va_list, so the other routines can operate on it to keep track of everything. Always make this the very first call on every new va_list string.
SYNTAX:
InitArgs vargs$
INPUTS:
vargs$ (STRING variable)
- This must be any string variable of a variable length string, no literals or fixed length strings are allowed here.
RESULT:
vargs$ (STRING variable)
- The initialized va_list (intended side effect on vargs$).