Turns the perspective view in the viewing plane as if you are watching the scene while tilting your head to the side.
These sliders let you define a view by moving the camera.
The Eye position, View point position, and Up vector end point determine the view. The nine fields that define these positions contain decimal numbers. They represent, from left to right, the X, Y, and Z Coordinates for each of the three camera parameters.
To see the camera as
you modify it, use WindowDisplay > Toggles > Cameras 
.
The Zoom slider also takes a decimal number that defines the extent of the field of view of the camera in degrees. Values must be positive in the range of 0.2 to 179.
