>Hi,
>>>
>The difference among PUBLIC and Private it is this:
>- PUBLIC doesn't depend on the stack scope
>- PRIVATE it depends on the stack scope
>>>
>
>I understand the differences in general - I was just wondering whether there was any practcal differences in the context of Craig's usage.

You can eliminate the PUBLIC variable completely

ADDPROP(_SCREEN,"Main",CREATEOBJECT("MainClass"))

If you want to create a public value (not an object!) that it withstands CLEAR ALL:

ADDPROP(_SCREEN,"publicValue",eValue)