diff -r 499435b4084e -r 53a402c10ba9 doc-src/TutorialI/Misc/document/fakenat.tex
--- a/doc-src/TutorialI/Misc/document/fakenat.tex	Fri Jul 13 17:56:05 2001 +0200
+++ b/doc-src/TutorialI/Misc/document/fakenat.tex	Fri Jul 13 17:58:39 2001 +0200
@@ -4,8 +4,8 @@
 %
 \begin{isamarkuptext}%
 \noindent
-The type \isaindexbold{nat}\index{*0|bold}\index{*Suc|bold} of natural
-numbers is predefined and behaves like%
+The type \tydx{nat} of natural
+numbers is predefined to have the constructors \cdx{0} and~\cdx{Suc}.  It  behaves as if it were declared like this:%
 \end{isamarkuptext}%
 \isacommand{datatype}\ nat\ {\isacharequal}\ {\isadigit{0}}\ {\isacharbar}\ Suc\ nat\end{isabellebody}%
 %%% Local Variables: