Around 1975, I loved TECO and totally embraced it strange, compact set of commands. I even expected my students (second semester CS majors) to develop a reasona

Around 1975, I loved TECO and totally embraced it strange, compact set of commands. I even expected my students (second semester CS majors) to develop a reasonable level of skill with TECO as it was at the time, on our systems, the most efficient way to write code. I programmed in it keeping my program in my head as much as I could, because like ed you had to issue a command for it to print out lines of the file you were working on. It's hard to imagine that it was possible to write real programs like that. Before TECO I was punching cards so it seemed like a big improvement. My use of TECO didn't last long; there was a full screen editor of some kind that I can't remember running on the KRONOS OS (CDC 6600 mainframe) that replaced TECO and shortly after that I discovered Emacs. What strange and interesting days those were to be programming.