yet, create it with default name "(none)", corpse ID equal to the new thing
type's ID, and remaining thing type attributes to 0.
-TT_CONSUMABLE [0-255]
+TT_CONSUMABLE [0-65535]
Set selected thing type's consumability value to argument – the number of
-lifepoints earned by consuming/using things of that type.
+.satiation score points earned by consuming/using things of that type.
TT_START_NUMBER [0-255]
Set selected thing type's number of things of type to spawn on successful