For example, suppose that you have defined the equations

Suppose that the current initial condition is the default: x(0)=0, y(0)=0, and z(0)=0.
Finally, suppose that you are using a display rectangle that shows the plots
restricted to the variables *x* and *y*.
When you click the right mouse button at the point (1,1), then you set the
new initial conditions to *x(0)=1, y(0)=1,* and *z(0)=0*.
When you click the 'Compute Orbit' button, the program computes the orbit that starts from point (1,1,0), and then draws the projection of that orbit into the *x - y* plane.
If you now double-click the point (2,2) on the plot, then the initial conditions become *x(0)=2, y(0)=2,* and *z(0)=0*, and the program immediately computes the orbit that passes through (2,2,0) and draws its projection on the current display.

Wed Sep 30 15:21:52 PDT 1998