I want to be a flasher.

[Richmond]

[Well, I guess it happens to all men at a certain age]

I don't know about the above, but I am beginning to think there is 
something wrong
with my memory.

I swear there was a "flash" command in RunRev/Livecode which would flash 
the screen.

However, having looked back at RunRev 2.2.1 I think I am wrong.

SO . . . does anybody know how to do this sort of thing:

on mouseUp
   invert screen colours, and/or flash the screen rapidly
end mouseUp

?

Richmond.