"PRONE"

Usage: prone

This brings you into prone (crawling) mode when moving. This allows
soldiers to have a chance to sneak around (25%-65% chance per
movement, depending on character and skill level). If you are using a
two handed rifle, you will find that you have better accuracy while
proned.

To go out of prone mode, simply STAND up. You are unable to use skills
or use Force powers while in prone mode.

See also: SNEAK STEADY