open close lock unlock pick
Syntax: open <object|direction> Syntax: close <object|direction> Syntax: lock <object|direction> Syntax: unlock <object|direction> Syntax: pick <object|direction> OPEN and CLOSE open and close an object or a door. LOCK and UNLOCK lock and unlock a closed object or door. You must have the required key to LOCK or UNLOCK. PICK can open a lock without having the key. In order to PICK successfully, you must practice the appropriate skill.

pick 'pick lock
Lock picking is one of the prime skills of thieves, allowing them to gain access to many secured areas. Lock picking success requires great dexterity, and the chance is hindered by the difficulty of the lock. Other classes may learn to pick locks, but they will never find it easy. See showskill pick lock for more details.