
You can find a neat Easter egg hidden in Test Chamber 17. One malfuncitoning wall panel reveals a den with cameras and pictures of cubes. Right of the piston and near the floor of is a user-name and password. Once you have written that down go to www.aperturelabrat oies.com. and type login. Enter the user-name and password. Type "Help" if you want to know all you can do.
To bind a key, type Bind (KEY) (whatever command).