Doxygen code documentation

The Doxygen code documentation is the built-in code and main developer documentation for Asterisk. It is generated by Doxygen [1]. Documentation is available for the following:

Asterisk trunk [1]
Contains the newest version of SVN code.

Asterisk 1.4 [1]
Contains documentation of release 1.4.

Asterisk 1.2 [1]
Contains documentation of release 1.2.