Emacs mode for GNU APL is incredible! Configuration/setup is very easy, and the advantage in function editing alone make it instantly a big win. It is easy to learn too. I start to edit a function just as in normal APL. The only thing I had to know was that Ctl-c Ctl-c saved my edit. Just knowing that makes things very easy. The APL window works like a regular APL session.
I am looking forward to learning more of its functionality. Anything I learn now is a bonus.
Very nice!!
Blake