X protocol proxy / X multiplicator?

[Tomasz Chmielewski]

I was wondering if it was possible to display an application on more 
than one display - and hence the "X protocol proxy / X multiplicator" 
title of this post.

This is how I imagine it:


10.0.0.1 X server
running an application
    |          |
10.0.0.2    10.0.0.3
client 1    client 2
both running the same application
started on X server


So, any change made to the application (or its interface) on client 1 
(10.0.0.2), would result in showing that change on client 2 (10.0.0.3), 
and vice versa.

More - new clients could connect to it, and old clients could disconnect 
- and the same one application would be still running.


Is it possible with X protocol?


-- 
Tomek