Re: new *Help* argument highlighting

[Richard Stallman]

    Aside: for this to work, docstring writers still have to use the ALLCAPS
    convention for arguments; I wonder if we could introduce (sometime after
    21.[45], obviously :) a new (additional) convention to mark arguments in
    the docstring, so less guesswork is needed.

That sounds like a good idea.  It would be more reliable than assuming
that upper-case words are argument names.