version 9 by Jon Ingold
part 2 - Stashable object rules
The stashing rules are an object-based rulebook. The stashing rules have outcomes allow stashing (success), no decision (no outcome - the default) and disallow stashing (failure).
Definition: a thing is a body-part if it is a part of the player.
First stashing rule for thing (called the item): if the item is unstashable, disallow stashing;
Stashing rule for the considered holdall: disallow stashing.
Stashing rule for something enclosing the considered holdall: disallow stashing.
Stashing rule for a body-part thing: disallow stashing.
The last stashing rule: allow stashing.