*** string-make-unibyte takes a string and converts it to unibyte<BR>
representation.  Most of the time, you don't need to care about the
representation, but it makes a difference when you compare strings.
<P>
The conversion from multibyte to unibyte representation
loses information; the only time Emacs performs it automatically
is when inserting a multibyte string into a unibyte buffer.
<P>