2.   Data element specifications

     Change indicators

     a plus sign (+)    for an addition
     an asterisk (*)    for an amendment to structure
     a hash sign (#)    for changes to names
     a vertical bar (|) for changes to text for descriptions,
                        notes and functions
     a minus sign (-)   for a deletion
     an X sign (X)      for marked for deletion

     Usage indicators

     [B] = used in batch messages only
     [I] = used in interactive messages only
     [C] = common usage in both batch and interactive messages