Added tags NUTAG_OUTBOUND(), NUTAG_OUTBOUND_SET1(), NUTAG_OUTBOUND_SET2(),
NUTAG_OUTBOUND_SET3(), and NUTAG_OUTBOUND_SET4().

darcs-hash:20060322133336-65a35-cb4d5ffeb5c77610fe179f6df23aaf81a09e66c8.gz