+Comments (optional)
+
+=item referral_custnum
+
+Referring customer number
+
+=item spool_cdr
+
+Enable individual CDR spooling, empty or `Y'
+
+=item dundate
+
+A suggestion to events (see L<FS::part_bill_event">) to delay until this unix timestamp
+
+=item squelch_cdr
+
+Discourage individual CDR printing, empty or `Y'