INTERFACERTDebug ; IMPORT RT0; PROCEDURE RegisterHandler (p: Handler);
 Registers the procedures p to be called when <*DEBUG*> pragmas are
   executed.   The default handler prints its arguments. 
TYPE
  Handler = PROCEDURE (m: RT0.ModulePtr; line: INTEGER;
                       READONLY msg: ARRAY OF TEXT) RAISES ANY;
PROCEDURE Init();
END RTDebug.