diff -r 7e51c9f3d5a0 -r a5f86aed785b doc-src/TutorialI/Trie/document/Trie.tex
--- a/doc-src/TutorialI/Trie/document/Trie.tex	Tue Aug 29 15:13:10 2000 +0200
+++ b/doc-src/TutorialI/Trie/document/Trie.tex	Tue Aug 29 15:43:29 2000 +0200
@@ -1,4 +1,5 @@
-\begin{isabelle}%
+%
+\begin{isabellebody}%
 %
 \begin{isamarkuptext}%
 To minimize running time, each node of a trie should contain an array that maps
@@ -122,7 +123,7 @@
 solves the proof. Part~\ref{Isar} shows you how to write readable and stable
 proofs.%
 \end{isamarkuptext}%
-\end{isabelle}%
+\end{isabellebody}%
 %%% Local Variables:
 %%% mode: latex
 %%% TeX-master: "root"