Hexen breakable items
Some items in Hexen may "contain" something and release it when they are broken. These include Pottery1, Pottery2, Pottery3 and ZSuitOfArmor. To do that, the first argument of the item must be a number corresponding to the item's SpawnID.
In the Universal Doom Map Format, it is possible to give an actor name in the arg0str property instead to spawn an item which does not have a spawn ID in the current game.