End of Ch.3 is now about "with statement".
Avoid obsolescence by directly referring to the section.
diff --git a/Doc/ref/ref5.tex b/Doc/ref/ref5.tex
index e64299a..89f9977 100644
--- a/Doc/ref/ref5.tex
+++ b/Doc/ref/ref5.tex
@@ -22,9 +22,9 @@
When a description of an arithmetic operator below uses the phrase
``the numeric arguments are converted to a common type,'' the
-arguments are coerced using the coercion rules listed at the end of
-chapter \ref{datamodel}. If both arguments are standard numeric
-types, the following coercions are applied:
+arguments are coerced using the coercion rules listed at
+~\ref{coercion-rules}. If both arguments are standard numeric types,
+the following coercions are applied:
\begin{itemize}
\item If either argument is a complex number, the other is converted