trackgen(6) on Linux
The text ec4e22f52c93, as Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny), Debian 4.0 (Etch) shipped it.
Terrain generator for tracks
Flags it lists
-
-B -
-E -
-H -
-S -
-a -
-b -
-c -
-n -
-s