improved handling of "that": insert into goal, only declare as Pure "intro";
eliminated functor;
(*  Title       : RComplete.thy
    ID          : $Id$
    Author      : Jacques D. Fleuriot
    Copyright   : 1998  University of Cambridge
    Description : Completeness theorems for positive
                  reals and reals 
*) 
RComplete = Lubs + RealArith