The Script class plays a Script - an XML file that contains a list of instructions. This is used for the pre-scripted demo, and can also be used for cut scenes and fly-bys. There are 2 kinds of XML commands: immediate instructions which do something, and events that wait for something to happen.
The commands are:
CameraPosition x, y, z, pitch, yaw. Move the camera instantly.
CameraPan time, x, y, z, pitch, yaw. Pans the camera over the time specified (in milliseconds)
Rain value[0.0, 1.0]
Volcano x y altitude
Pit x y altitude
Bridge x y endX endY width
CreateWalkingMob x y id[0,7] type. Where 'id' is used to refer to it later, and type is the name of the resource to use.