The push buttons on the push-button view are associated with debugger
  commands.  You can:

   -  Change a push button's label or the command associated with a push
      button

   -  Add a new push button and assign a command to that button

   -  Remove a push button

   -  Resequence a push button

  NOTE:  You cannot modify or remove the Stop push button.

  The Additional Topics explain how to customize push buttons
  interactively through the DECwindows Motif interface.

  To save these modifications for subsequent debugger sessions, choose
  Save Options from the Options menu on the main window or an optional
  view.  This creates a new version of the debugger resource file with
  the new definitions.