USAGE: drop <item>
or drop all/ALL <item type>
<item> identifies a unique item of your inventory.
<item type> can be:
an item identifier (bag, sword, etc)
an item category (armours, weapons, bags, foods, drinks, drugs)
an armour type (l_hand, r_hand, l_leg, etc)
a weapon type (long blade weapons, knives and daggers,...)
(this last is case insensitive)
drop <item>
Standard drop, attempts to move the specified item into the room.
drop all [<item type>]
Drop all items which aren't marked as kept.
eg: drop all
drop all armours
drop all long blade weapons
drop ALL [<item type>]
Drop all items, **including those marked as kept**.
eg: drop ALL
drop ALL weapons
drop ALL l_hand