Division by 0 (zero) in an App

[Bob Frazee]

Han wrote;
"In other words, how do you normally start your app?"
I typically start it by either tapping on the "HeatIndex" App screen icon or highlighting the App screen icon and hitting the "Enter" key.

I presume that HeatIndex() starts the program, and even though it appears to do nothing, the BEGIN END pair has to be there, or the App will not run. If it actually does nothing, then it should execute the next instruction, which is the VIEW command. The order of this App follows the DiceSimulation() App example on p 579 of the manual.

Cyrille wrote;
"Note that you can test your faulty app program function by exporting it and calling it directly from the command line. At this point, it will behave like a normal program."
So in this case, Han is correct?, I should export START()? How do I do that, since it is part of the View command? Do I need to structure my App differently than the example in the manual in order to use the code troubleshooting method Cyrille suggested?