Alter Aeon Online Help

Keywords are:  'lock unlock open close doors'

Usage:
open <door> <direction>
lock <door> <direction>
close <door> <direction>
unlock <door> <direction>

(<direction> is optional)

Occasionally there may be a door on an exit. To open the door type "open
<door name>". To close a door type "close <door name>". If a door is locked,
you must have the key to the door in your inventory and type "unlock <door
name>". To lock a door type "lock <door name>". A locked door may or may not
be closed. Pick may also be used to unlock a door.

Containers may also have the ability to be opened and closed, see
"help containers"