Added document ref to Sphinx. Inserted links at the Epydoc text.

Author: okin

docs/writing/documentation.rst

@@ -193,6 +193,10 @@ Multi-line docstrings: ::
         if imag == 0.0 and real == 0.0: return complex_zero
         ...
 
+
+.. _sphinx-ref:
+
+
 Sphinx
 ------
 
@@ -220,14 +224,16 @@ should help you familiarize yourself with its syntax.
 Other Tools
 :::::::::::
 
+
 Epydoc
 ------
-Epydoc generates API documentation based on docstrings. 
-Epydoc is able to parse docstrings marked up with reStructuredText, Javadoc, 
-plaintext or epytext. It supports various output formats, most notable HTML, 
-PDF or LaTeX documents.
+`Epydoc <http://epydoc.sourceforge.net/>`_ generates API documentation based on docstrings. 
+Epydoc is able to parse docstrings marked up with :ref:`reStructuredText-ref`, 
+`Javadoc <http://www.oracle.com/technetwork/java/javase/documentation/index-jsp-135444.html#javadocdocuments>`_, 
+`epytext <http://epydoc.sourceforge.net/manual-epytext.html>`_ or plaintext. 
+It supports various output formats, most notable HTML, PDF or LaTeX documents.
 
-The development of Epydoc is discontinued. You should use Sphinx instead.
+The development of Epydoc is discontinued. You should use :ref:`sphinx-ref` instead.
 
 pycco / docco / shocco
 ----------------------