vzt2vcd(1) on Linux
The text 539373971b4a, as Debian 7 (Wheezy) shipped it.
Converts VZT files to VCD
Flags it lists
-
--coalesce -
--flatearth -
--help -
--notruncate -
--vztname -
-c -
-f -
-h -
-n -
-v