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

 character-string

    OpenVMS usage:char_string
    type:         character string
    access:       read only
    mechanism:    by descriptor

    String whose initial character is to be used by LIB$SKPC in the
    comparison. The character-string argument contains the address of
    a descriptor pointing to this string. Only the first character of
    character-string is used, and the length of character-string is
    not checked.

 source-string

    OpenVMS usage:char_string
    type:         character string
    access:       read only
    mechanism:    by descriptor

    String to be searched by LIB$SKPC. The source-string argument
    contains the address of a descriptor pointing to this string.