diff -r 3b7b72db57f1 -r 7e51c9f3d5a0 doc-src/TutorialI/Misc/document/Itrev.tex
--- a/doc-src/TutorialI/Misc/document/Itrev.tex	Tue Aug 29 12:28:48 2000 +0200
+++ b/doc-src/TutorialI/Misc/document/Itrev.tex	Tue Aug 29 15:13:10 2000 +0200
@@ -1,5 +1,4 @@
-%
-\begin{isabellebody}%
+\begin{isabelle}%
 %
 \begin{isamarkuptext}%
 Function \isa{rev} has quadratic worst-case running time
@@ -89,7 +88,7 @@
 will need to be creative. Additionally, you can read \S\ref{sec:advanced-ind}
 to learn about some advanced techniques for inductive proofs.%
 \end{isamarkuptxt}%
-\end{isabellebody}%
+\end{isabelle}%
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