anchor.diff:       | objectTypeAssignement
        | trapTypeAssignement
        | moduleIdentityAssignement
  +     | moduleComplianceAssignement
        | macroAssignement
        ;
   
  
positive.code:     '::=' 'TEXTUAL-CONVENTION' (complexAttribut ','*)+
      ;
  
  trapTypeAssignement :
      'TRAP-TYPE'
       (complexAttribut ','*)+
  
negative.code:     | name='DESCRIPTION' stringValue
      | name='MODULE' IDENTIFIER?
      | name='INCLUDES' groups
      | name='OBJECTS' objects
      | name='VARIABLES' variables
      | name='INDEX' index
  