Re: Displaying bytes

[Richard Stallman]

    If someone wants to take a stab at it, that's fine by me, but it looks
    way too difficult for me.  The origin of the problem can be so diverse
    that it'll be difficult to come up with instrcutions that will be useful
    and will not confuse a significant part of the user population.

How about:

It's possible Emacs guessed the wrong coding system to decode the file.
[advice on how to check that, and how to specify a different coding system]

If these strange characters are due to bad data in a file you visited,
just try not to let them worry you.

If you think they appeared due to a bug in Emacs, please send a bug
report using M-x report-emacs-bug.

If they appear for some other reason not mentioned above, please
consider its absence from this message to be a bug in Emacs, and
please send a bug report using M-x report-emacs-bug.