To spawn a craft or small body, click the top left button and drag the crosshairs to where you want to spawn the craft. To change the craft, click the button that says craft type. Then type one of the craft names into the text box. You can do random things with the orbital velocity and timewarp slider to speed time up. A good orbital velocity is 89. Beware of the Roche limit. Sometimes, the orbital lines don’t appear. I don’t know why.
I hope I got the physics right.
