diff -r 9be481b4bc85 -r 699de91b15e2 doc-src/TutorialI/Ifexpr/document/Ifexpr.tex
--- a/doc-src/TutorialI/Ifexpr/document/Ifexpr.tex	Tue Aug 29 00:57:24 2000 +0200
+++ b/doc-src/TutorialI/Ifexpr/document/Ifexpr.tex	Tue Aug 29 11:52:16 2000 +0200
@@ -1,4 +1,5 @@
-\begin{isabelle}%
+%
+\begin{isabellebody}%
 %
 \begin{isamarkuptext}%
 \subsubsection{How can we model boolean expressions?}
@@ -131,7 +132,7 @@
 and prove \isa{normal(norm b)}. Of course, this requires a lemma about
 normality of \isa{normif}:%
 \end{isamarkuptext}%
-\isacommand{lemma}{\isacharbrackleft}simp{\isacharbrackright}{\isacharcolon}\ {\isachardoublequote}{\isasymforall}t\ e{\isachardot}\ normal{\isacharparenleft}normif\ b\ t\ e{\isacharparenright}\ {\isacharequal}\ {\isacharparenleft}normal\ t\ {\isasymand}\ normal\ e{\isacharparenright}{\isachardoublequote}\end{isabelle}%
+\isacommand{lemma}{\isacharbrackleft}simp{\isacharbrackright}{\isacharcolon}\ {\isachardoublequote}{\isasymforall}t\ e{\isachardot}\ normal{\isacharparenleft}normif\ b\ t\ e{\isacharparenright}\ {\isacharequal}\ {\isacharparenleft}normal\ t\ {\isasymand}\ normal\ e{\isacharparenright}{\isachardoublequote}\end{isabellebody}%
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