Make internal module references hyperlinks wherever it makes sense.
diff --git a/Doc/lib/libparser.tex b/Doc/lib/libparser.tex
index 49a92e5..369308c 100644
--- a/Doc/lib/libparser.tex
+++ b/Doc/lib/libparser.tex
@@ -59,7 +59,7 @@
one. The first element is an integer which identifies a production in
the grammar. These integers are given symbolic names in the C header
file \file{Include/graminit.h} and the Python module
-\module{symbol}. Each additional element of the sequence represents
+\refmodule{symbol}. Each additional element of the sequence represents
a component of the production as recognized in the input string: these
are always sequences which have the same form as the parent. An
important aspect of this structure which should be noted is that
@@ -78,7 +78,7 @@
identified. The example of the \keyword{if} keyword above is
representative. The various types of terminal symbols are defined in
the C header file \file{Include/token.h} and the Python module
-\module{token}.
+\refmodule{token}.
The AST objects are not required to support the functionality of this
module, but are provided for three purposes: to allow an application
@@ -275,7 +275,7 @@
\function{sequence2ast()} have no methods of their own.
Ordered and equality comparisons are supported between AST objects.
-Pickling of AST objects (using the \module{pickle} module) is also
+Pickling of AST objects (using the \refmodule{pickle} module) is also
supported.
\begin{datadesc}{ASTType}
@@ -447,7 +447,7 @@
types; they map directly to terminal and non-terminal symbols in the
grammar. Unfortunately, they are represented as integers in the
internal representation, and the Python structures generated do not
-change that. However, the \module{symbol} and \module{token} modules
+change that. However, the \refmodule{symbol} and \refmodule{token} modules
provide symbolic names for the node types and dictionaries which map
from the integers to the symbolic names for the node types.