/sys$common/syshlp/helplib.hlb CC, Run-time functions, va_start_1  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  Initializes a variable to the beginning of the argument list.

  Syntax:

       #include <varargs.h> (Compaq C Extension)

       void va_start_1(va_list ap, int offset);