diff -r 7ef380745743 -r 5ab08609e6c8 doc-src/TutorialI/basics.tex
--- a/doc-src/TutorialI/basics.tex	Sat Nov 04 18:54:22 2000 +0100
+++ b/doc-src/TutorialI/basics.tex	Mon Nov 06 11:32:23 2000 +0100
@@ -186,8 +186,8 @@
 \ttindexboldpos{::}{$Isalamtc} binds weakly and should therefore be enclosed
 in parentheses: \isa{x < y::nat} is ill-typed because it is interpreted as
 \isa{(x < y)::nat}. The main reason for type constraints are overloaded
-functions like \isa{+}, \isa{*} and \isa{<}. (See \S\ref{sec:TypeClasses} for
-a full discussion of overloading.)
+functions like \isa{+}, \isa{*} and \isa{<}. See \S\ref{sec:overloading} for
+a full discussion of overloading.
 
 \begin{warn}
 In general, HOL's concrete syntax tries to follow the conventions of