mention new module doc display feature of pydoc in libref and NEWS
diff --git a/Doc/lib/libpydoc.tex b/Doc/lib/libpydoc.tex
index 0108d79..bb74df6 100644
--- a/Doc/lib/libpydoc.tex
+++ b/Doc/lib/libpydoc.tex
@@ -60,3 +60,8 @@
\program{pydoc} \programopt{spam} documents precisely the version of
the module you would get if you started the Python interpreter and
typed \samp{import spam}.
+
+Module docs for core modules are assumed to reside in
+{}\url{http://www.python.org/doc/current/lib/}. This can be overridden by
+setting the \envvar{PYTHONDOCS} environment variable to a different URL or
+to a local directory containing the Library Reference Manual pages.