--- a/doc-src/TutorialI/Advanced/document/simp.tex Thu Jul 26 18:23:38 2001 +0200
+++ b/doc-src/TutorialI/Advanced/document/simp.tex Fri Aug 03 18:04:55 2001 +0200
@@ -58,7 +58,7 @@
congruence rule for \isa{if}. Analogous rules control the evaluation of
\isa{case} expressions.
-You can declare your own congruence rules with the attribute \isa{cong},
+You can declare your own congruence rules with the attribute \attrdx{cong},
either globally, in the usual manner,
\begin{quote}
\isacommand{declare} \textit{theorem-name} \isa{{\isacharbrackleft}cong{\isacharbrackright}}