Ooh---I didn't know about that. I'm just getting started with Emacs, but I'm liking it a lot at the moment. As for organisation/documentation: I tend to document what I'm doing as I go along in files called 'notes', though my system is rather patchy to say the least at the moment. I also have a normal 'lab book' which I keep as a kind of scribbling pad for ideas, writing down questions (and their answers) and generally getting more of an overview of things. Also I use it for preliminary calculations worked out by hand, and diagrams etc. There's something very satisfying I find about filling up a book with scribbles of your work, and very handy when you forget what you've been doing.