Boxes usually contain a treasure of some sort. To open a
box you must contend with the lock, so you may have to
pick it open (help skill pick locks) or break it open (help skill smash).
Many boxes are trapped, and the traps can affect all beings in a room,
so be wary of where you decide to break them open!
Boxes can also be targetted by their current state. (locked/jammed/etc)
cast clairvoyance also: object handling