I saw that index.php is the platform and it handle all modules. Is someone knows some inforamtion a about the module engine: how it runs modules (i think it is the class ezmodule and ezmodule::run() method) I also want ot know how works the conntent module. If someone knows some informations, please post it.
You are on the right track, but since this stuff is not so well documentet you are a bit on you own. It might help a bit to use the doxygen api reference: http://pubsvn.ez.no/doxygen/3.9/html/index.html