D18A

REFERENCE

To specify a reference.

Segment structure

C506       REFERENCE                                          M
   1153    Reference code qualifier                           M   an1..3
   1154    Reference identifier                               C   an1..70
   1156    Document line identifier                           C   an1..6
   1056    Version identifier                                 C   an1..9
   1060    Revision identifier                                C   an1..6