comment-multi-line docstring

[Luc Teirlinck]

>From C-h f comment-multi-line:

    *Non-nil means M-x comment-indent-new-line continues comments, with no
     new terminator or starter.
    This is obsolete because you might as well use C-j.

    You can customize this variable.

Is that "This is obsolete" really accurate?  The direct effect on an
interactively used `M-x comment-indent-new-line' might be obsolete,
but is this not used by auto-fill-mode?  If so, should the docstring
not mention this?

Assuming this _really_ is obsolete, then why clutter a Custom buffer
with it?

Sincerely,

Luc.