[roastsquirrel]

The Tcl/Tk documentation is very good, so I read the documentation for those details, eg for lrange,

lrange list first last List must be a valid Tcl list. This command will return a new list consisting of elements first through last, inclusive ... (not put it all here because it goes on a bit :)

[ghettoimp]

Sure. Sadly my company's code base, and the vendor's tool that it extends, are not so well documented. A statically typed language gives just you so much more sanity checking -- sometimes even without having to compile anything, what with these fancy IDEs.