Re: C-c C-{l,r} in Enriched mode.

[Richard Stallman]

    But when used in conjunction with Outline mode, Enriched mode
    overrides Outline mode's C-c C-l (`hide-leaves') binding.

    Should `set-{left,right}-margin' in Enriched mode be rebound?

It sounds like a good argument.  What new bindings do you suggest?

    While on the subject of keybindings, it seems that there are no rules
    for C-c followed by a _Meta_ character.  Are these just too
    inconvenient to worry about?

I think so.