The Module namespace contains the different modules of Friendica.
Each module is loaded through the [`App`](https://github.com/friendica/friendica/blob/develop/src/App.php).
-Rules for Modules:
-- Named like the call (i.e. https://friendica.test/contact => `Contact`)
-- Start with capitals and are **not** camelCased.
-- Directly interacting with a given request (POST or GET)
-- Extending [`BaseModule`](https://github.com/friendica/friendica/blob/develop/src/BaseModule.php).
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+There are mainly two types of modules:
+- frontend modules to interact with users
+- backend modules to interact with machine requests
+
+### Frontend modules
+
+This type of modules mainly needs a template, which are generally located at
+[view/templates/](https://github.com/friendica/friendica/tree/develop/view/templates).
+
+A frontend module should extend the [`BaseModule`](https://github.com/friendica/friendica/blob/develop/src/BaseModule.php), especially the `content()` method.
+
+### Backend modules
+
+This type of modules mainly responds either with encoded `XML` or with `JSON` output.
+It isn't intended to respond with human readable text.
+
+A frontend module should extend the [`BaseModule`](https://github.com/friendica/friendica/blob/develop/src/BaseModule.php), especially the `rawContent()` method.
+
+### Routing
+
+Every module needs to be accessed within a route.
+The routes are defined inside [`Router->collectRoutes()`](https://github.com/friendica/friendica/blob/develop/src/App/Router.php).
+
+Use the given routes as a pattern for further routes.
+
+The routing library and further documentation can be found [here](https://github.com/nikic/FastRoute).
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