Angband Wiki

Open a door or chest (o)

       To open an object such as a door or chest, you must use this
       command.  If the object is locked, you will attempt to pick the
       lock based on your disarming ability.  If you open a trapped chest
       without disarming the traps first, the trap will be set off.  Some
       doors will be jammed shut and may have to be forced open.  You may
       need several tries to open a door or chest.  This command may take
       a count, is affected by the "always_repeat" option, requires a
       direction, and takes some energy