While we are on the topic of old Unix editors, I once made Caltech qed build again: https://github.com/chneukirchen/qed-caltech Also, I've been trying to contact David Tilbrook, who maintains(-ed?) his own version of qed, without success. I got an evaluation copy of his QEF build system, which contains a bit of documentation about it, but no binary. Perhaps someone here can help out, or knows more? -- Christian Neukirchen <chneukirchen(a)gmail.com> http://chneukirchen.org