diff --git a/docs/source/theory/resource_tree.rst b/docs/source/theory/resource_tree.rst
index 7c9cb88..4fcf91e 100644
--- a/docs/source/theory/resource_tree.rst
+++ b/docs/source/theory/resource_tree.rst
@@ -53,133 +53,300 @@ Resources
 
 ``/request/method``
 ~~~~~~~~~~~~~~~~~~~
+
 The HTTP method of the incoming request.
 
 Sample usage:
 
-.. code-block:: bash
-   $ kapow get /request/method
-   GET
-
-``/request/host``
-~~~~~~~~~~~~~~~~~
-
-The ``Host`` header as defined in the HTTP/1.1 spec.
-
-Sample usage:
-
 If the user runs:
 
 .. code-block:: bash
-   $ curl http://kapow.example:8080
 
+   $ curl -X POST http://kapow.example:8080
 
 then, when handling the request:
 
 .. code-block:: bash
+
+   $ kapow get /request/method
+   POST
+
+
+``/request/host``
+~~~~~~~~~~~~~~~~~
+
+The ``Host`` header as defined in the HTTP/1.1 spec of the incoming
+request.
+
+Sample usage:
+
+If the user runs:
+
+.. code-block:: bash
+
+   $ curl http://kapow.example:8080
+
+then, when handling the request:
+
+.. code-block:: bash
+
    $ kapow get /request/host
    kapow.example
 
 
 ``/request/path``
 ~~~~~~~~~~~~~~~~~
-Contains the path substring of the URL.
 
+Contains the path substring of the URL.
 
 Sample usage:
 
+If the user runs:
+
 .. code-block:: bash
-   # GET http://url.example/foo/bar?q=1
+
+   $ curl http://kapow.example:8080/foo/bar?qux=1
+
+then, when handling the request:
+
+.. code-block:: bash
+
    $ kapow get /request/path
    /foo/bar
 
 ``/request/matches/<name>``
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Contains the part of the URL captured by the pattern ``name``.
+
 Sample usage:
 
+For a route defined like this:
+
 .. code-block:: bash
-   $ kapow get
+
+   $ kapow route add /foo/{mymatch}/bar
+
+if the user runs:
+
+.. code-block:: bash
+
+   $ curl http://kapow.example:8080/foo/1234/bar
+
+then, when handling the request:
+
+.. code-block:: bash
+
+   $ kapow get /request/matches/mymatch
+   1234
 
 ``/request/params/<name>``
 ~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Contains the value of the URL parameter ``name``
+
 Sample usage:
 
+If the user runs:
+
 .. code-block:: bash
-   $ kapow get
+
+   $ curl http://kapow.example:8080/foo?myparam=bar
+
+then, when handling the request:
+
+.. code-block:: bash
+
+   $ kapow get /request/params/myparam
+   myparam
+
 
 ``/request/headers/<name>``
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Contains the value of the HTTP header ``name`` of the incoming request.
+
 Sample usage:
 
+If the user runs:
+
 .. code-block:: bash
-   $ kapow get
+
+   $ curl -H X-My-Header=Bar http://kapow.example:8080/
+
+then, when handling the request:
+
+.. code-block:: bash
+
+   $ kapow get /request/headers/X-My-Header
+   Bar
+
 
 ``/request/cookies/<name>``
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Contains the value of the HTTP cookie ``name`` of the incoming request.
+
 Sample usage:
 
+If the user runs:
+
 .. code-block:: bash
-   $ kapow get
+
+   $ curl --cookie "MYCOOKIE=Bar" http://kapow.example:8080/
+
+then, when handling the request:
+
+.. code-block:: bash
+
+   $ kapow get /request/cookies/MYCOOKIE
+   Bar
 
 ``/request/form/<name>``
 ~~~~~~~~~~~~~~~~~~~~~~~~
+
+Contains the value of the field ``name`` of the incoming request.
+
 Sample usage:
 
-.. code-block:: bash
-   $ kapow get
-
-``/request/files/<name>``
-~~~~~~~~~~~~~~~~~~~~~~~~~
-Sample usage:
+If the user runs:
 
 .. code-block:: bash
-   $ kapow get
+
+   $ curl -F -d myfield=foo http://kapow.example:8080/
+
+then, when handling the request:
+
+.. code-block:: bash
+
+   $ kapow get /request/form/myfield
+   foo
+
 
 ``/request/files/<name>/filename``
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Contains the name of the file uploaded through the incoming request.
+
 Sample usage:
 
+If the user runs:
+
 .. code-block:: bash
-   $ kapow get
+
+   $ curl -F -d myfile=@filename.txt http://kapow.example:8080/
+
+then, when handling the request:
+
+.. code-block:: bash
+
+   $ kapow get /request/files/myfile/filename
+   filename.txt
+
 
 ``/request/files/<name>/content``
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Contents of the file that is being uploaded in the incoming request.
+
 Sample usage:
 
+If the user runs:
+
 .. code-block:: bash
-   $ kapow get
+
+   $ curl -F -d myfile=@filename.txt http://kapow.example:8080/
+
+then, when handling the request:
+
+.. code-block:: bash
+
+   $ kapow get /request/files/myfile/content
+   ...filename.txt contents...
+
 
 ``/request/body``
 ~~~~~~~~~~~~~~~~~
+
+Raw contents of the incoming request HTTP body.
+
 Sample usage:
 
+If the user runs:
+
 .. code-block:: bash
-   $ kapow get
+
+   $ curl --data-raw foobar http://kapow.example:8080/
+
+then, when handling the request:
+
+.. code-block:: bash
+
+   $ kapow get /request/body
+   foobar
+
 
 ``/response/status``
 ~~~~~~~~~~~~~~~~~~~~
+
+Contains the status code given in the user response.
+
 Sample usage:
 
+If during the request handling:
+
 .. code-block:: bash
-   $ kapow get
+
+   $ kapow set /response/status 418
+
+then the response will have the status code ``418 I am a Teapot``.
+
 
 ``/response/headers/<name>``
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Contains the value of the header ``name`` in the user response.
+
 Sample usage:
 
+If during the request handling:
+
 .. code-block:: bash
-   $ kapow get
+
+   $ kapow set /response/headers/X-My-Header Foo
+
+then the response will contain an HTTP header named ``X-My-Header`` with
+value ``Foo``.
+
 
 ``/response/cookies/<name>``
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Contains the value of the cookie ``name`` that will be set to the user
+response.
+
+
 Sample usage:
 
+If during the request handling:
+
 .. code-block:: bash
-   $ kapow get
+
+   $ kapow set /response/cookies/MYCOOKIE Foo
+
+then the response will set the cookie ``MYCOOKIE`` to the user in
+following requests.
+
 
 ``/response/body``
 ~~~~~~~~~~~~~~~~~~
+
+Contains the value of the response HTTP body.
+
 Sample usage:
 
 .. code-block:: bash
-   $ kapow get
+
+   $ kapow set /response/body foobar
+
+then the response will contain ``foobar`` in the body.