[wrs]

You’d have to write not only a terminal, but a FUSE layer or something, because when an MPW tool opens a file, it’s actually opening the live editor buffer for the file (if there is one). You can even give a filename to a tool that represents the editor selection in the file. Which was all awesome, and I have also thought of trying to figure out how to do it in newer MacOS or Linux.

I always figured this was inspired by Smalltalk, with its “DoIt” command, but never asked the MPW folks.