If the mouse pointer goes close to the arbitrary coordinate, the color of the coordinate become yellow. At this time, to translate or rotate it to the positive direction, move the mouse pointer to the right direction on the screen with pressing the the left mouse button. For the negative direction, move the mouse pointer to the left direction on the screen.

If the mouse pointer goes inside the trackball, the ball will be highlighted and free rotation can be done.

The three spherical coordinates behave by the right-hand rule. For example, if a user drags a mouse pointer to the right direction after he moves it close to red circle, manipulator revolves to the right direction on a red axis.

By revolving the three spherical coordinates, it is possible to change the direction of the three rectangular coordinates.

Independent to view, size of manipulator is always fixed.