Library /sys$common/syshlp/dbg$uihelp.hlb DEBUGUI, on_context_ha  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  Context-sensitive help is information about an area or object in a
  window or a dialog box.

  To display context-sensitive help:

  1.  Choose On Context from the Help menu in a debugger window.  The
      pointer shape changes to a question mark (?).

  2.  Place the question mark on an object or area in a debugger window
      or dialog box.

  3.  Click on MB1.  Information about that area or object is displayed
      in a Help window.  Additional Topics provide task-oriented
      discussions, where applicable.

  To display context-sensitive help for a dialog box, you can also click
  on the Help button in the dialog box.