Just wanted to say thanks for the reference to magicsplat. I had never heard of it before and it lead me to a more recent book by eight years which includes information on starkits and starpacks; and the same web page linked to a tutorial on updates to Tk and some other useful documents. I'm not the greatest at web searching so this comment may be a bit unfair, but, where it's been written that Tcl/Tk is the "best-kept secret in the software industry" it might be in part to the fact that it is rather hard to find even when one is looking for it.