„
  = LBR$DELETE_DATA (library_index, txtrfa) deleted - for binary keys, passed by IBRARY_INDEX 0  - Index value returned by LBR$INI_CONTROL ER_4  - Retrieve a library history update record status = LBR$GET_INDEX (library_index, index_number, routine_name  DENTIFIERˆœ DENTIFIERˆŒ
 D_VALUE 
             - Default file specification HAR_STRINGˆŒ
 ol operation BR$PUT_END - Write an end-of-module record HISTORY
  X  - Number of index to search ex, index_number)   NDEX