Tcl

Yes. It's quite horrible and not at all like most languages, unless you're used to UNIX scripting. It's really a scripting language for programmers, and exists largely to glue bits of an application together. As such, it integrates easily, but has no concessions to usability. I advise you to get a reference book.

Are there any reference books online? I'm leaving on monday, and don't have time to order a book; it won't get here in time.

Ben

The official Tcl tutorial is available at http://www.tcl.tk/man/tcl8.5/tutorial/tcltutorial.html. Be warned, the language works almost entirely by string replacement, so it's quite different from other mainstream languages - plus, a good amount of the language is actually syntactic sugar. As well, the company may also use a different version of Tcl: This is fairly common practice depending what the interpreter is being deployed on, and what kind of testing you'll be doing.