VMS Help MACRO, VAX MACRO Assembler, /CROSS_REFERENCE  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /CROSS_REFERENCE[=(function[,...])]
       /NOCROSS_REFERENCE (default)

    Controls whether a listing is produced of the locations in the
    source file where the specified function (or functions) is
    defined or referenced. If you specify only one function, you
    can omit the parentheses.

    You can specify the following functions:

    ALL         Cross-references directives, macros, operation codes,
                registers, and symbols
    DIRECTIVES  Cross-references directives
    MACROS      Cross-references macros
    OPCODES     Cross-references operation codes
    REGISTERS   Cross-references registers
    SYMBOLS     Cross-references symbols

    Because the assembler writes the cross-references to the listing
    file, you must specify the /LIST qualifier with the /CROSS_
    REFERENCE qualifier. If you specify no functions in the /CROSS_
    REFERENCE qualifier, the assembler assumes the default value
    of /CROSS_REFERENCE=(MACROS,SYMBOLS). The /NOCROSS_REFERENCE
    qualifier excludes the cross-reference listing.