diff -r f45296bb1485 -r 5f0c8a3f0226 doc-src/IsarOverview/Isar/document/isabelle.sty
--- a/doc-src/IsarOverview/Isar/document/isabelle.sty	Mon May 02 16:28:33 2005 +0200
+++ b/doc-src/IsarOverview/Isar/document/isabelle.sty	Mon May 02 18:29:29 2005 +0200
@@ -25,15 +25,12 @@
 \newcommand{\isactrlsup}[1]{\emph{\isascriptstyle${}\sp{#1}$}}
 \newcommand{\isactrlisub}[1]{\emph{\isascriptstyle${}\sb{#1}$}}
 \newcommand{\isactrlisup}[1]{\emph{\isascriptstyle${}\sp{#1}$}}
+\newcommand{\isactrlbsub}{\emph\bgroup\begin{math}{}\sb\bgroup\mbox\bgroup\isastylescript}
+\newcommand{\isactrlesub}{\egroup\egroup\end{math}\egroup}
+\newcommand{\isactrlbsup}{\emph\bgroup\begin{math}{}\sp\bgroup\mbox\bgroup\isastylescript}
+\newcommand{\isactrlesup}{\egroup\egroup\end{math}\egroup}
 \newcommand{\isactrlbold}[1]{{\bfseries\upshape\boldmath#1}}
 
-% somewhat hackish: spanning sub/super scripts (\<^bsub>..\<^esub>)
-\newcommand{\isactrlbsub}{%
-\def\isatext##1{\isastylescript##1}\begin{math}_\bgroup}
-\newcommand{\isactrlesub}{\egroup\end{math}}
-\newcommand{\isactrlbsup}{%
-\def\isatext##1{\isastylescript##1}\begin{math}^\bgroup}
-\newcommand{\isactrlesup}{\egroup\end{math}}
 
 \newdimen\isa@parindent\newdimen\isa@parskip