diff -r 20cf817f3b4a -r 7626cb4e1407 doc-src/TutorialI/ToyList/document/ToyList.tex
--- a/doc-src/TutorialI/ToyList/document/ToyList.tex	Tue Oct 17 10:45:51 2000 +0200
+++ b/doc-src/TutorialI/ToyList/document/ToyList.tex	Tue Oct 17 13:28:57 2000 +0200
@@ -183,7 +183,7 @@
 \end{isabelle}
 The prefix of bound variables \isasymAnd$x\sb{1}$~\dots~$x\sb{n}$ can be
 ignored most of the time, or simply treated as a list of variables local to
-this subgoal. Their deeper significance is explained in \S\ref{sec:PCproofs}.
+this subgoal. Their deeper significance is explained in Chapter~\ref{ch:Rules}.
 The {\it assumptions} are the local assumptions for this subgoal and {\it
   conclusion} is the actual proposition to be proved. Typical proof steps
 that add new assumptions are induction or case distinction. In our example