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

    The MACRO command invokes the VAX MACRO assembler to assemble one
    or more assembly language source files.

    The qualifiers to the MACRO command serve as either command
    (global) qualifiers or positional qualifiers. A command
    qualifier affects all the files specified in the MACRO command. A
    positional qualifier affects only the file that it qualifies. All
    MACRO qualifiers except the /LIBRARY and /UPDATE qualifiers are
    usable as either command or positional qualifiers. The /LIBRARY
    and /UPDATE qualifiers are positional qualifiers only.

    See the qualifier descriptions for restrictions.

    For a complete functional description of the VAX MACRO assembler
    directives, see the VAX MACRO and Instruction Set Reference
    Manual. For a complete functional description of the MACRO-32
    compiler for OpenVMS Alpha, see Migrating to an OpenVMS Alpha System:
    Porting VAX MACRO Code.