Rotates the view in 3D space, but constrained to horizontal and vertical orbit only.
Button
Ribbon: View tab 
Navigate
panel Orbit
drop-down OrbitNot available on the ribbon
in the current workspace. Toolbar: 3D
Navigation
Menu: View Orbit Constrained
OrbitNot available in menus
in the current workspace.
Selecting one of more objects before starting this command limits the display to those objects only.
While the command is active, right-click to display additional options from a shortcut menu.
3DORBIT activates a 3D Orbit view in the current viewport. You can view your entire drawing or select one or more objects before starting the command.
When 3DORBIT is active, the target of the view stays stationary and the camera location, or point of view, moves around the target. However, it appears as if the 3D model is turning as the mouse cursor is dragged In this way, you can specify any view of the model.
The 3D Orbit cursor icon appears. If you drag the cursor horizontally, the camera moves parallel to the XY plane of the world coordinate system (WCS). If you drag the cursor vertically, the camera moves along the Z axis.
While the command is active, you can access additional 3DORBIT options and modes from a shortcut menu by right-clicking in the drawing area, or choosing buttons on the 3D Navigation toolbar. See 3D Orbit Shortcut Menu.
