a few typographical changes (e.g. -- => ---) and lots of new stuff in the WWW chapter
diff --git a/Doc/ref/ref4.tex b/Doc/ref/ref4.tex
index 0198117..2f2e1c8 100644
--- a/Doc/ref/ref4.tex
+++ b/Doc/ref/ref4.tex
@@ -82,7 +82,7 @@
space for various types of code blocks. The name space for a
particular module is automatically created when the module is first
referenced. Note that in almost all cases, the global name space is
-the name space of the containing module -- scopes in Python do not
+the name space of the containing module --- scopes in Python do not
nest!
\begin{center}