anchor.diff:  ;
   
   communicationDescriptionEntry :
  -	communicationDescriptionEntry_format1 
  -	| communicationDescriptionEntry_format2
  -	| communicationDescriptionEntry_format3
  -;
  -
  -communicationDescriptionEntry_format1 :
  +	communicationDescriptionEntryFormat1 
  +	| communicationDescriptionEntryFormat2
  +	| communicationDescriptionEntryFormat3
  +;
  +
  +communicationDescriptionEntryFormat1 :
   	CD cdName FOR INITIAL? INPUT
   	( 
   		(
  
positive.code: 	DOT
  ;
  
  communicationDescriptionEntry_format3 :
  	CD cdName FOR INITIAL I_O
  	( 	
  		(
  
negative.code: 	DOT
  ;
  
  communicationDescriptionEntryFormat2 :
  	CD cdName FOR OUTPUT
  	(
  		DESTINATION COUNT IS dataDescName
  