 It helps us to extend the order-preserving (OP ) criterion , originally defined and carefully examined in 18%DIFDELCMD < ]%%% , into the design of the mappings.
<coherence>  It helps us to extend the order-preserving (OP ) criterion , originally defined and carefully examined in 18%DIFDELCMD < ]%%% , into the design of the mappings.
 It helps us to extend the 18%DIFDELCMD < ]%%% , into the design of the mappings.