HI, it's been awhile since I did some significantly new Tcl/Tk, except use some of my scripts without mentioning it, but recently I tried to make an automated script for the rather labyrinthine Sage math package. Unfortunately I ran into problems trying to run it like a normal Linux executable, for instance if I run "wish" in the background, and simply do ====== set f [open "| sage 2>@1 " w+] ====== To simply use the program as a (text mode0 server, it hangs unless I put tcl/wish in the foreground. Did anyone do anything with this sort of problem ? Theo V.