*** Strings can contain multibyte characters.  The function<BR>
`length' returns the string length counting bytes, which may be
more than the number of characters.
<P>
You can include a multibyte character in a string constant by writing
it literally.  You can also represent it with a hex escape,
\xNNNNNNN..., using as many digits as necessary.  Any character which
is not a valid hex digit terminates this construct.  If you want to
follow it with a character that is a hex digit, write backslash and
newline in between; that will terminate the hex escape.
<P>