anchor.diff:  
   type
     TAppPyEvent = (
  -    cEventOnOpen,
  -    cEventOnOpenBefore,
  -    cEventOnClose,
  -    cEventOnSaveAfter,
  -    cEventOnSaveBefore,
       cEventOnKey,
       cEventOnKeyUp,
       cEventOnInsert,
  
positive.code: 
  const
    cAppPyEvent: array[TAppPyEvent] of string = (
      'on_open',
      'on_open_pre',
      'on_close',
      'on_save',
      'on_save_pre',
      'on_key',
      'on_key_up',
      'on_insert',
  
negative.code:     cEventOnState,
      cEventOnFocus,
      cEventOnStart,
      cEventOnOpen,
      cEventOnOpenBefore,
      cEventOnClose,
      cEventOnSaveAfter,
      cEventOnSaveBefore,
      cEventOnLexer,
      cEventOnComplete,
      cEventOnGotoEnter,
  