[comp.sys.mac.hypercard] How are Background IDs Determined?

ford@sei.cmu.edu (Gary Ford) (09/05/90)

What is the algorithm for determining a background id number as cards
migrate from stack to stack?  In particular, I have a set of prototypical
cards, each with a unique background.  Over time, copies of these cards
are made, information added, and the cards placed in several stacks.  Over
still more time, cards are moved and copied among these and new stacks.
Is it guaranteed that cards that originated from the same prototype will
have the same background id number when they end up in the same stack,
regardless of which other stacks they passed through?

Is the answer to this question different in HyperCard 2.0?

Gary Ford
Software Engineering Institute
Carnegie Mellon University