VMS Help DSR, DSR Flags, Index  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    With the Index flag (>), you can mark words in the text of your
    document as index entries. Using the .INDEX command instead of
    the Index flag is a more common way of marking index entries.

1 - Default

    Recognition is turned off. To turn on recognition, you must use
    the .FLAGS INDEX command.