Index Items:  Items list in the index tab of the help system.

    Topic titles:  Add all topic titles (heading titles) to the index list.

    Index entries:  Add the index entries of the source document to the index list.

    Bookmarks:  Add the bookmarks in the source document to the index list.

    Bookmark filter:  Decide what bookmarks to add.
Note:  Microsoft Word may add many bookmarks to the document automatically.

    All:  Add all the bookmarks.

    Partial:  Add only the bookmarks with the specified prefix.

    Bookmark prefixes:  Specified the prefixes for the bookmarks.  Multiple prefixes should be separated by commas (,).