
diff -r 7e51c9f3d5a0 -r a5f86aed785b doc-src/TutorialI/Misc/document/arith1.tex
--- a/doc-src/TutorialI/Misc/document/arith1.tex	Tue Aug 29 15:13:10 2000 +0200
+++ b/doc-src/TutorialI/Misc/document/arith1.tex	Tue Aug 29 15:43:29 2000 +0200
@@ -1,6 +1,7 @@
-\begin{isabelle}%
+%
+\begin{isabellebody}%
 \isacommand{lemma}\ {\isachardoublequote}{\isasymlbrakk}\ {\isasymnot}\ m\ {\isacharless}\ n{\isacharsemicolon}\ m\ {\isacharless}\ n{\isacharplus}\isadigit{1}\ {\isasymrbrakk}\ {\isasymLongrightarrow}\ m\ {\isacharequal}\ n{\isachardoublequote}\isanewline
-\end{isabelle}%
+\end{isabellebody}%
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