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

       /LIBRARY
       /NOLIBRARY

    Positional qualifier.

    The associated input file to the /LIBRARY qualifier must be a
    macro library. The default file type is MLB. The /NOLIBRARY
    qualifier has the same effect as not specifying the /LIBRARY
    qualifier, or negates the effects of any /LIBRARY qualifiers
    specified earlier in the command line.

    The compiler can search up to 16 libraries, one of which
    is always STARLET.MLB. This number applies to a particular
    compilation, not necessarily to a particular MACRO command. If
    you enter the MACRO command so that more than one source file is
    compiled, but the source files are compiled separately, you can
    specify up to 16 macro libraries for each separate compilation.
    More than one macro library in a compilation causes the libraries
    to be searched in reverse order of their specification.

    A macro call in a source program causes the compiler to begin the
    following sequence of searches:

    1. An initial search of the libraries specified with the .LIBRARY
       directive. The compiler searches these libraries in the
       reverse order of that in which they were declared.

    2. If the macro definition is not found in any of the libraries
       specified with the .LIBRARY directive, a search of the
       libraries specified in the MACRO command line (in the reverse
       order in which they were specified).

    3. If the macro definition is not found in any of the libraries
       specified in the command line, a search of STARLET.MLB.