VMS Help CMS, ANNOTATE, Qualifiers, /OUTPUT[=file-specification]  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Directs CMS to write output to the specified file. CMS creates a
    new file if you do not specify /APPEND. If you omit the /OUTPUT
    qualifier (or if you specify /OUTPUT but do not provide a file
    specification), CMS creates a file with the element file name and
    the file type .ANN. Wildcards are allowed.

    If you annotate more than one element (by specifying wildcards or
    a group name for the element expression parameter), and you do not
    specify wildcards in the output file specification, CMS creates
    successive versions of the file indicated by /OUTPUT.