-\section pf_basics Basic concepts
-
-Nowadays, the Internet is composed of a bunch of independently managed
-networks. Within each of those networks, there are entry and exit
-points (most of the time, you can both enter and exit through the same
-point); this allows to leave the current network and reach other
-networks, possibly even in other locations.
-At the upper level, such a network is called
-<b>Autonomous System (AS)</b>, while at the lower level it is named
-sub-network, or LAN (local area network).
-They are indeed autonomous: routing is defined
-(within the limits of his network) by the administrator, and so, those
-networks can operate without a connection to other
-networks. So-called gateways allow you to go from one network to
-another, if such a (physical) connection exists. Every node in one network
-that can be directly reached (i.e., without traversing other nodes) from
-another network is called a gateway.
-Each autonomous system consists of equipment such as cables (network links),
-routers and switches as well as computers.
-
-The structure of the SimGrid platform description relies exactly on the same
-concept as a real-life platform (see above). Every resource (computers,
-network equipment etc.) belongs to an AS, which can be defined by using the
-\<AS\> tag. Within an AS, the routing between its elements can be defined
-abitrarily. There are several modes for routing, and exactly one mode must be
-selected by specifying the routing attribute in the AS tag:
+\section pf_netzones Defining a netzone
+
+Here is a simplistic example, describing a netzone using the Full
+routing. Other supported values for the routing attribute can be
+found below, Section \ref pf_raf.
+