Why X protocol/server forbid zero width/height?

[Alexander Shopov]

>> And such a huge change will have to be planned years ahead (5 or more).
>> So - will there be a new version of the X protocol in 2010?
> 
> I haven't seen anything that would require one.
I have not either. *That* makes me nervous.

X Window - upgrading all the way from the cave to the space station - 
one brick at a time. (batteries not included, only interstellar hyper drive)

Best regards:
al_shopov