132: How do I input 8-bit characters?

  Again, from the "European Display" page of the on-line manual:

    If you enter non-ASCII ISO Latin-1 characters often, you might find ISO
    Accents mode convenient.  When this minor mode is enabled, the
    characters ``', `'', `"', `^', `/' and `~' modify the following letter
    by adding the corresponding diacritical mark to it, if possible.  To
    enable or disable ISO Accents mode, use the command "M-x
    iso-accents-mode".  This command affects only the current buffer.

    To enter one of those six special characters, type the character,
    followed by a space.  Some of those characters have a corresponding
    "dead key" accent character in the ISO Latin-1 character set; to enter
    that character, type the corresponding ASCII character twice.  For
    example, `''' enters the Latin-1 character acute-accent (character code
    0264).