[Objects help]  open close lock unlock

Syntax: open 

Open and close are used to manipulate objects and doors.  A closed
object will have to be opened before it can be looked into.  A closed door
will stop almost all characters, with the possible exception of the
occasional sorceror. A book has to be opened before it can be read.

Lock and unlock are used to manipulate a closed object or door.  You
must have the requisite key to lock or unlock something.  Keep in mind that
not all keys are so named.

See also: bash pick read