"A friend of mine made a very good living doing M just after leaving University."
"She's an undertaker now..."
That's sort of my point.
IIRC it was Forth based and allows abbreviations of commands. IOW it's for those who find C a bit too verbose.
I think it can legitimately be said that after you've used it you won't want to use another programming language.
Because you won't want to do programming ever again.