VMS Help RTL Routines, STR$, STR$PREFIX  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    The Prefix a String routine inserts a source string at the
    beginning of a destination string. The destination string must
    be dynamic or varying length.

    Format

      STR$PREFIX  destination-string ,source-string

  Additional Information (explode) :

• Returns
• Arguments