Attached you will find an implemetation of /bin/ed. It's got about %60-80 of v7 fucntionality (the commands that I use, plus a few that I don't, plus almost all the *wierd* addressing modes). I thought I'd get further than this, but, hey, coding takes time and I've got a job and two kids... Let me know if you like it...also let me know if anyone else wants to pick up and fill in more of the pieces...I may fill in more as time permits, but, having gotten to this place, I'm going to give it a rest and get back to life... Happy hacking, ---George Jones gmj@infinet.com, www.infinet.com/~gmj