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

  The Save Options command in the Options menu of the source view saves
  the current definitions of the debugger user-interface options in the
  user-specific debugger resource file DECW$USER_DEFAULTS:VMSDEBUG.DAT.

  You can use the debugger editor or another editor to change the
  definitions in the debugger resource file.