'pickup' changes how you pick up items when you step on them.
to pickup an item manually, use the ',' key.

The pickup command takes one or more flags as a parameter.
Parameters are combined with OR (money OR food).

Flag all: Pickup all items.
Flag none: Don't pick up items.
Flag ammo: Pickup arrows and bolts.
Flag equip: Pickup containers, keys, lighters.
Flag armor: Pickup up armor, shiels, helmets, shoes and cloths.
Flag weapons: Pickup blades, bows, and other weapons.
Flag magic: Pickup all magical items
Flag food: Pickup food and drink.  Includes poisons.
Flag money: Pickup coins and gems

Flag density n: Pickup items with a value density
density greater than 'n'.

Value density is value in gold/weight in kilograms.

The value in gold is what the item is worth if you
sold it in the shop.

Goldcoins have a value density of 66,

Density 10 will pickup silver, gold,
rings, wands, books, and scrolls.
Artifacts are also picked up.

