Determines what entries Author-it will include in the index of the Help system. You can choose one or more options:
- Index Entries will include entries defined in the Index Contents pane.
- Topic Heading will include an entry for each Help tab topic heading.
- Hot Spots will include an entry for the referenced topic, at the point from where it is referenced.
The HelpFromHeadings element corresponds to the "(Build index from) Index entries" field on the Windows Help tab of the Index object.
true, false, (don't inherit)