A help widget is a modeless widget that allows you
  to display appropriate, context-sensitive help text
  in response to a user query.   The help widget can
  be viewed as an independent application that your
  application calls to provide help functions.

  The help widget creates and manages one or more
  help windows and determines the first topic to be
  displayed to the user.

1  –  functions_1

  To use the help widget, you perform the following
  steps:

  1. Use the VMS Librarian Utility (LIBRARIAN) to
     create a help library.

  2. Create a Help menu bar item for your
     application.  The Help menu item should be
     located at the right of the menu bar.  If the
     menu bar is wider than a line, the Help menu
     item should be located at the bottom right.