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

  The On Window help topic (Using the Main Window, Using the Optional
  View Window, Using the Editor Window, Using the Instruction Window) and
  their subtopics provide task-oriented information about the debugger
  and debugging.

  To display the On Window topics, use either of these techniques:

   -  Choose On Window from the Help menu in a debugger window.

   -  Choose Go To Overview from the View menu of a debugger help window.

  Then, to display information about a particular subject, choose a topic
  from the list of Additional Topics.