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Keywords are:  'thief skill pickpocket pocket'

Skill: pickpocket               Lvl  7 Thie  (28%)
                                (critical)   
                                Group: Thief stealing skill group

Usage:
pickpocket <target>

Low level thieves can learn to pick the pockets of other targets.  All kinds
of interesting things may be found - typically money, but occasionally rings,
magic items, and other stuff can be 'liberated' from others.

This skill also carries a relatively low penalty for getting caught, and
charisma can help you talk your way out of trouble if you do get caught.
Be careful around guards!