Hey,
I just thought of something: what about using Tcl threads to make a low-priorty thread for certain drawing actions in GUIs? It might be useful for something like [Scope~] that causes quite a bit of redrawing.
.hc
------------------------------------------------------------------------ ----
If nature has made any one thing less susceptible than all others of exclusive property, it is the action of the thinking power called an idea, which an individual may exclusively possess as long as he keeps it to himself; but the moment it is divulged, it forces itself into the possession of everyone, and the receiver cannot dispossess himself of it. - Thomas Jefferson