If \fI\-mouse\fP is specified, the control point of the Julia set will
be derived from the position of the mouse in the window. When the mouse
is not in the window, the control point is chosen the normal way.
If \fI\-mouse\fP is specified, the control point of the Julia set will
be derived from the position of the mouse in the window. When the mouse
is not in the window, the control point is chosen the normal way.