BUY LIST SELL VALUE
buy <object> list list <object> list full sell <object> value <object>
BUY buys an object from a shop keeper.
LIST lists the objects the shop keeper will sell you. LIST <object> lists
just the objects with that name.
LIST FULL lists a terse (not necessarily complete) description of the
items a shop keeper will sell to you. Extra bits are listed before the
'|', and other details after. The extra bits are shown in one or two-
character descriptions (one character is lower-case, two is upper-case).
SELL sells an object to a shop keeper.
VALUE asks the shop keeper how much he, she, or it will buy the item for.