[toronto-lisp] Development helpers

Hi there, A bit of a noob question - let's say that I have an interactive Repl session that has been going on for about an hour or so, and all of a sudden I wish to modify a defun I wrote a while ago. What is the easiest way first to show that code on the console, modify it, and load it back into Repl ? I am just trying to come up with a comfortable development environment for myself. Thanks, Alex Sent from my iPhone