How to escape from chokes and locks

Freefight techniques : http://www.imineo.com/sports-jeux/arts-martiaux/freefight/the-escapes-video-11684.htm

How to escape from a ground hold, head lock, mount and chokes.

How to escape from every ground hold and turn a bad fight into a victory. Escapes from head locks, mounts, side and upper 4 1/4 chokes etc. Knowledge of the escapes allows you to be calm on the ground and turn a disadvantage into an advantage.