Hey, I think that this new package, called `cl-array.el', will be great for XEmacs. I've already done some wonders with it. It makes XEmacs almost fully compatible with Common Lisp with respect to arrays. Using it, you can do lots of neat stuff. So far, I've written a matrix package (matrix.el). It's all GNU Emacs compatible too. I sent a letter to Dave Gillespie, and he seems to think it's a good idea. Here is his reply to my mail: Here's the package, cl-array.el. Comments welcome. Note that I'm not on the XEmacs-beta mailing list. Lastly, here's the matrix package, matrix.el --dave