Jamroom module system
The concept in Jamroom is that
everything is a module. Even the core is a module.
.htaccess directs all incoming URL's to router.php in the core module, then router.php figures out who wants it depending on what the URL contains.
Modules are able to take advantage of this routing system to choose the content to return, or to add some extra info to some other modules output.
There are many parts, functions and features that can be used, this section tries to show you how to get familiar with them.