I found this in a comment by papaf: http://news.ycombinator.com/item?id=1994419 http://news.ycombinator.com/item?id=1994419 which was in a submission about Ma

I found this in a comment by papaf: http://news.ycombinator.com/item?id=1994419 http://news.ycombinator.com/item?id=1994419 which was in a submission about Maxima. It's new to me, and looks perfect for my simpler uses.