-.de Bx44N1
-.Bx 4.3 Net/1 Pq March 3, 1989 \\$1
-..
-.de g102
-.No groff-1.02 Pq after March 1989, before June 1991 \\$1
+.\" option was present in groff-1.01 as contained in 4.3BSD-Net/2
+.\" and no mention of it could be found in the ChangeLog,
+.\" so it's probably older than groff-0.4, where the log started
+.de g04
+.No probably before groff-0.4 Pq before July 14, 1990 \\$1