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+**Devices**
+Here is a list of the devices you can put on the network and their functions.
+
+* **Switch** - A managed network switch.  It learns the MAC addresses on the network and does VLANs.  Has spanning-tree Protocol perpetually enabled.
+
+* **net_hub** - A hub can have an IP address, but it does not learn MAC addresses.  It broadcasts packets out all ports which are connected.
+* **server** - A server can serve DHCP.  Only has wired networks.
+
+* **laptop** - A laptop has both an ethernet and wireless connection.
+
+* **pc** - Only has an ethernet connection.
+
+* **router** - Has multiple ethernet connections and routes packets between them.
+
+* **ip_phone** - Only has a wireless connection.  Can only be configured by DHCP
+
+* **firewall** - Has a WAN connection and multiple LAN connections.  Does VLANs.  Can serve DHCP.  Can do VPNs.
+ 
+* **printer** - A wired device
+
+* **copier** - A wired device
+
+* **microwave** - Has no network connection. A microwave disrupts wireless devices around it.
+
+* **fluorescent light** - A fluorescent light disrupts wired connections that are too close to it.
+
+* **Wireless Access Point** - An access point with one ethernet connection and one wireless connection.  Set the SSID and Key on it to function.
+
+* **Wireless Router** - The most complex device on the network.  It has a firewall, does VLANs, can serve DHCP, can do VPNs, has a built-in switch, and has wireless capabilities.
+
+* **Wireless Bridge** - A wireless bridge.  A wireless client, for joining a wired network to a wireless network.
+
+* **Wireless Repeater** - A repeater.  It has two antennas, one as a client, and one as a server.  For extending wireless links that are too long.
+
+* **cellphone** - A device that has only wireless
+
+* **tablet** - A device that has only wireless
+
+* **link** - An ethernet cable that joins two devices.  You can join a wireless device with an access-point.  Doing so will set the SSID and Key on the client to match what is on the Access Point.  Note: When creating a link, you can specify what type of link to make.  You can create a broken link, which looks like it is attached, but network packets cannot go between devices.
+
+* **Selection Arrow** - Use this for dragging and dropping, selecting, and editing things on the network.
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