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

    Provides  a  means  of   identifying   the   object   module.
    This identification  is  in  addition  to  the name assigned to the
    object module with .TITLE.  A character string can be specified in
    .IDENT to label the object module.  This string is printed in the
    header of the listing file and also appears in the object module.

      .IDENT string

    string

    A 1- to 31-character string that identifies the  module,  such  as
    a string that specifies a version number.

    If a source module contains more than one .IDENT, the last
    directive given  establishes the character string that forms part
    of the object module identification.