VMS Help CMS, RESERVE, Qualifiers, /NOTES="string"  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Specifies that notes are to be appended to the lines of the
    file as it is retrieved by the RESERVE operation. This qualifier
    overrides the element's nonotes attribute, if one was established.

    The quoted string specifies the format of the note. The quoted
    string can contain text or the characters #G (or #g), or both.
    If you specify /NOTES for an element that does not have the notes
    attribute enabled, then you must also specify /POSITION.