1.1 --- a/doc-src/Ref/classical.tex	Thu Apr 13 15:01:35 2000 +0200
     1.2 +++ b/doc-src/Ref/classical.tex	Thu Apr 13 15:01:45 2000 +0200
     1.3 @@ -681,7 +681,7 @@
     1.4  current claset by \emph{extra} introduction, elimination, or destruct rules.
     1.5  These provide additional hints for the basic non-automated proof methods of
     1.6  Isabelle/Isar \cite{isabelle-isar-ref}.  The corresponding Isar attributes are
     1.7 -``$intro!!$'', ``$elim!!$'', and ``$dest!!$''.  Note that these extra rules do
     1.8 +``$intro??$'', ``$elim??$'', and ``$dest??$''.  Note that these extra rules do
     1.9  not have any effect on classic Isabelle tactics.
    1.10  
    1.11