--- a/doc-src/TutorialI/Misc/document/case_splits.tex Tue Aug 29 15:13:10 2000 +0200
+++ b/doc-src/TutorialI/Misc/document/case_splits.tex Tue Aug 29 15:43:29 2000 +0200
@@ -1,4 +1,5 @@
-\begin{isabelle}%
+%
+\begin{isabellebody}%
%
\begin{isamarkuptext}%
Goals containing \isaindex{if}-expressions are usually proved by case
@@ -82,7 +83,7 @@
If you need to split both in the assumptions and the conclusion,
use $t$\isa{.splits} which subsumes $t$\isa{.split} and $t$\isa{.split_asm}.%
\end{isamarkuptxt}%
-\end{isabelle}%
+\end{isabellebody}%
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