topics to be inherited from multiple entries. Operation/Help now also gives
the help hash a default ISA array, to make downstream processing by tests and
documentation compilers easier.
Convert existing Help entries that already used ISA to have an array ref
instead of a singular hash ref. Also update the Help skeleton to show
the new syntax.
Add a feature to the Help where the user's UI Level is checked
and only fields that he can see are displayed. A URL is provided
to override the UI.
Article help is updated to work with UI level display.
