3D Graphics - Advanced From/To Options
Use to set advanced viewing properties.
Added Reference Frames
Lists the reference frames within which the virtual camera will be fixed.
Add button. Use to access the Coordinate Frame Selection window where you can add axes to be used as the reference frame.
Delete button. Use to delete the selected reference frame.
Position Viewing
Use to modify the values of latitude, longitude, and altitude if the View From field is set to Latitude, Longitude, Altitude on the View From To page.
Latitude. The latitude of the view from position.
Longitude. The longitude of the view from position.
Altitude. The altitude of the view from position. The Earth altitude is displayed in either the MSL or WGS84 shape, based on the setting of the scenario global attribute property Surface Reference of Earth Globes. All other central bodies display their altitude based on their ellipsoid, which is similar to WGS84.
Zoom Speed
Set your mouse zoom speed using the Slower and Faster buttons or slider. Click Reset to return to the default speed.
Zoom Slower when Near Central Body. Sets the zoom speed relative to the distance from the central body. As you get closer to the surface, your zoom increment decreases, giving you finer control over your zoom speed when navigating around ground-based objects.
Keyboard Constrained Rotation
Rotate About X:Ctrl, Y:Alt, Z:Ctrl-Alt
You can also use the 
button to toggle between the Rotate about Reference Axes and the Rotate about Screen Axes modes.
Rotate about Reference Axes. Constrains rotation about the reference axes specified in the Reference Frame field on the View/From To screen. CTRL constrains rotation to the X axis, ALT constrains rotation to the Y axis, and CTRL-ALT constrains rotation to the Z axis.
You can constrain the reference axes only if Unconstrained Rotation is enabled on the View/From To screen.
Rotate about Screen Axes. Constrains rotation about the screen axes. CTRL prevents horizontal rotation and allows vertical rotation, ALT prevents vertical rotation and allows horizontal rotation, and CTRL-ALT prevents both horizontal and vertical rotation causing the window to spin.
Rotation Mode
Panning On Central Bodies. When rotating the scene with the mouse over the central body, the clicked position will move to where the mouse is dragged.
Panning Disabled. Disables panning mode.
Rotate Slower when Near View Object. Slows down the rotation rate when close to the view object.
Track Ball
Radius. Specifies the size of the virtual track ball.
Untethered Mode Settings
Untethered mode enables you to move freely about the graphics window using keyboard combinations. When you select this mode, the view is not constrained along any direction vector or pointing towards any object.
Initial Attitude. Controls the camera's initial position and orientation. Valid values are:
Default. Sets the initial attitude to the default (From/To) attitude.
Current. Prevents the camera from moving whenever Apply or Reset View is set.
System Origin. Resets the camera to the system's origin. For example, if the system's origin is the pilot's seat, you can reset the camera, in untethered mode, to the pilot's seat.
Speed. The speed of the camera.
Align View Direction With Origin. Aligns the view direction with the system's origin. For example, enabling this option enables you to move out of the cockpit of a plane and rotate around it, as opposed to rotating around itself.