Is there any difference between `equal' and `string=' for strings?

[Marcin Borkowski]

Well, of course a string and a symbol can never be `equal', but they can
be `string='.  But what if both arguments are strings?  The docstrings
seem to imply that you can use `equal' and `string=' interchangeably and
they will always give the exact same result.  Is that correct?

TIA,

-- 
Marcin Borkowski
http://mbork.pl