CameraViewport

CameraViewport camera,x,y,width,height

Set the camera viewport (the area of the screen where a camera image is rendered); by default, all the screen (or window) is used.

This command allows to use only part of the screen, and so the rest of the screen can be used to show panels, or also other camera image (i.e. to achieve split-screen effect). Also, a smaller viewport can be used to make a rear-view effect.