[comp.sys.mac.hypercard] Error handling in Hypercard

zrm@eddie.MIT.EDU (Zigurd R. Mednieks) (11/13/87)

HypperCard has the obscurely documented message called
"cantUnderstand" that gets send to a card when HyperCard can't
understand a script. Is there more than meets the eye here? Are there
messages for occations when HyperCard can't find a button of a given
ID, etc? Does HyperCard have real error handling?

"Ha, ha ha, this guy expects something reasonable!"
-Zigurd