Interesting; I've always written &ct, which wikipedia informs me is considered "archaic" Thanks for that note, it will save me one character of typing 3 years from now when I've finally broken the muscle memory of the old way :)
Wikipedia probably mentioned it, but & is a combination of "e" and "t", or "et" - french (or perhaps latin?) for "and". Thus &c is short for "etc", or "et cetera". I wasn't aware of the form "&ct", I presume it stands for "ET CeTera", but I'm not entirely clear on why that extra "T" would ever make sense. I doubt anyone ever used "etct"?
