From MONUSE_STARTING_EQUIPMENT on, monsters are capable of handling items.
    Contrary to what one might expect MONUSE_WEAPONS_ARMOUR also means a
    monster is capable of using wands and will also pick them up, something
    that those with MONUSE_STARTING_EQUIPMENT won't do.
    MONUSE_MAGIC_ITEMS is currently never used anywhere.

    From MONUSE_STARTING_EQUIPMENT on, monsters are capable of handling
    items.  Contrary to what one might expect, MONUSE_WEAPONS_ARMOUR
    also means a monster is capable of using wands and will also pick
    them up, something that those with MONUSE_STARTING_EQUIPMENT won't
    do.  MONUSE_MAGIC_ITEMS is currently never used anywhere.