global variable change in substack not available to main stack

[Slava Paperno]

I'm curious about globals and the message box. I've been doing both
(omitting the global declaration and including it) and I haven't seen any
difference, but I've seen conflicting opinions in the posts here as well as
some forums. What's the skinny on this?

Slava

> > In the Message box:
> 
> > put gBgColor
> > --0, 0, 0
> 
> You have to declare the global variable. In the message box try
> 
> global gBgColor; put gBgColor