--- a/doc-src/TutorialI/Misc/document/fakenat.tex Tue Aug 29 00:57:24 2000 +0200
+++ b/doc-src/TutorialI/Misc/document/fakenat.tex Tue Aug 29 11:52:16 2000 +0200
@@ -1,11 +1,12 @@
-\begin{isabelle}%
+%
+\begin{isabellebody}%
%
\begin{isamarkuptext}%
\noindent
The type \isaindexbold{nat}\index{*0|bold}\index{*Suc|bold} of natural
numbers is predefined and behaves like%
\end{isamarkuptext}%
-\isacommand{datatype}\ nat\ {\isacharequal}\ \isadigit{0}\ {\isacharbar}\ Suc\ nat\end{isabelle}%
+\isacommand{datatype}\ nat\ {\isacharequal}\ \isadigit{0}\ {\isacharbar}\ Suc\ nat\end{isabellebody}%
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