RTROTCTR command
Rotates 3D drawings about a center point that you pick in the drawing, in real-time.
                Method
The constrained rotation cursor is displayed during real-time rotation. Hold down the mouse's left button and then move the mouse to rotate the drawing in real-time.
Context Menu Options
Right-click to display the context menu to switch viewing mode.
- Pan
 - Pans the drawing in real-time. Starts the RTPAN command.
 
- Zoom
 - Zooms the drawing in real-time. Starts the RTZOOM command.
 
- Constrained sphere
 - Rotates the 3D drawing in real-time. Starts the RTROTCTR command.
 
- Sphere
 - Rotates the 3D drawing in real-time. Starts the RTROT command.