 looks circular). If you simply click once somewhere, this sets the new center of the window. If you click once close enough to a point, a circle center or an event, then the center of the window will be set exactly to the coordinates of that point. <BR><BR></A>
<A NAME="around"><B>move around </B>lets you do exactly that: move around the scene (get rid of the grid with the <B>grid</B> button if the motion looks ugly)<BR><BR></A>
<A NAME="newpoint">with <B>new point</B> when you click anywhere in the scene 