diff -r f58598341d30 -r c0272df4775b doc-src/TutorialI/isabelle.sty
--- a/doc-src/TutorialI/isabelle.sty	Wed Oct 22 10:52:36 2003 +0200
+++ b/doc-src/TutorialI/isabelle.sty	Wed Oct 22 10:53:12 2003 +0200
@@ -24,6 +24,8 @@
 \newcommand{\isascriptstyle}{\def\isamath##1{##1}\def\isatext##1{\mbox{\isastylescript##1}}}
 \newcommand{\isactrlsub}[1]{\emph{\isascriptstyle${}\sb{#1}$}}
 \newcommand{\isactrlsup}[1]{\emph{\isascriptstyle${}\sp{#1}$}}
+\newcommand{\isactrlisub}[1]{\emph{\isascriptstyle${}\sb{#1}$}}
+\newcommand{\isactrlisup}[1]{\emph{\isascriptstyle${}\sp{#1}$}}
 \newcommand{\isactrlbold}[1]{{\bfseries\upshape\boldmath#1}}
 
 \newdimen\isa@parindent\newdimen\isa@parskip