x2sys_list(1gmt) on Linux
The text b5b9e3618593, as Debian 7 (Wheezy) shipped it.
Output a subset of crossovers from data base
Flags it lists
-
-A -
-C -
-F -
-I -
-L -
-N -
-Q -
-R -
-S -
-T -
-V -
-W -
-bo -
-m