vob protection?

was looking at what protection is used on the cossacks and gamecopy world says vob, whats vob?
cd media world has no ref to this-is this a protection or abbreviation?
Brad.

[BOT]

If you want to find out what protection is used with a game then ##### the details for game at
####://www.isonews.com/

GCW has a description of the copy protection used with Cossacks
- ####://www.cdmediaworld.com/hardware/cdrom/cd_protections_copylok.shtml