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+Appendix: Generating This Documentation
+=======================================
+
+Requirements
+------------
+
+This documentation is created with `Sphinx <http://sphinx-doc.org>`_ and `Breathe <http://michaeljones.github.io/breathe/index.html>`_. Here are the required tools:
+
+1. Doxygen is required. `Install <http://www.stack.nl/~dimitri/doxygen/download.html#srcbin>`_ it for your platform.
+
+2. The easiest way to install all the tools is with `Python Package Index (PyPI) <http://pypi.python.org>`_. Just run this and it will install Sphinx, Breathe, and all the required tools if they are not installed::
+
+   $ sudo pip install breathe
+
+3. Otherwise if PyPI is not available, consult Sphinx and Breathe sites for installation instructions and you may need to install these manually:
+
+  - `Sphinx <http://sphinx-doc.org>`_
+  - `Breathe <http://michaeljones.github.io/breathe/index.html>`_
+  - docutils
+  - Pygments
+
+
+Rendering The Documentation
+------------------------------
+The main source of the documentation is currently the '''Trac''' pages at https://trac.pjsip.org/repos/wiki/pjsip-doc/index. The copies in SVN are just copies for backup.
+
+To render the documentation as HTML in `_build/html` directory::
+
+  $ cd $PJDIR/doc/pjsip-book
+  $ python fetch_trac.py
+  $ make
+  
+To build PDF, run::
+
+  $ make latexpdf
+
+
+How to Use Integrate Book with Doxygen
+--------------------------------------
+Quick sample::
+
+  will be rendered like this:
+  +++++++++++++++++++++++++++
+
+  This is how to quote a code with syntax coloring:
+
+  .. code-block:: c++
+
+       pj::AudioMediaPlayer *player = new AudioMediaPlayer;
+       player->createPlayer("announcement.wav");
+
+  There are many ways to refer a symbol: 
+
+  * A method: :cpp:func:`pj::AudioMediaPlayer::createPlayer()`
+  * A method with alternate display: :cpp:func:`a method <pj::AudioMediaPlayer::createPlayer()>`
+  * A class :cpp:class:`pj::AudioMediaPlayer`
+  * A class with alternate display: :cpp:class:`a class <pj::AudioMediaPlayer>`
+
+  For that links to work, we need to display the link target declaration (a class or method) 
+  somewhere in the doc, like this:
+  
+  .. doxygenclass:: pj::AudioMediaPlayer
+        :path: xml
+        :members:
+
+  Alternatively we can display a single method declaration like this:
+
+  .. doxygenfunction:: pj::AudioMediaPlayer::createPlayer()
+        :path: xml
+        :no-link:
+
+  We can also display class declaration with specific members.
+  
+  For more info see `Breathe documentation <http://michaeljones.github.io/breathe/domains.html>`_
+
+     
+.. default-domain:: cpp
+
+will be rendered like this:
++++++++++++++++++++++++++++
+
+This is how to quote a code with syntax coloring:
+
+.. code-block:: c++
+
+       pj::AudioMediaPlayer *player = new AudioMediaPlayer;
+       player->createPlayer("announcement.wav");
+
+There are many ways to refer a symbol: 
+
+* A method: :cpp:func:`pj::AudioMediaPlayer::createPlayer()`
+* A method with alternate display: :cpp:func:`a method <pj::AudioMediaPlayer::createPlayer()>`
+* A class :cpp:class:`pj::AudioMediaPlayer`
+* A class with alternate display: :cpp:class:`a class <pj::AudioMediaPlayer>`
+
+For that links to work, we need to display the link target declaration (a class or method) somewhere in the doc, like this:
+  
+   .. doxygenclass:: pj::AudioMediaPlayer
+        :path: xml
+        :members:
+
+Alternatively we can display a single method declaration like this:
+
+   .. doxygenfunction:: pj::AudioMediaPlayer::createPlayer()
+        :path: xml
+        :no-link:
+
+We can also display class declaration with specific members.
+
+For more info see `Breathe documentation <http://michaeljones.github.io/breathe/domains.html>`_
+
+
+