| New | Supports full screen. |
|---|
| Left-click | Add a planet. Change menu. |
|---|---|
| Right-click | Change menu. |
| [Color] | Change the color of a planet. "?" shows a random color. |
| [Track] | Change the type of trajectory. line - short line long line - long line point - dotted line non - hide |
| [Target] | Add a planet to the selected direction. 1.Click the mouse to locate a planet. 2.Drag the mouse to determine the direction. 3.Release the mouse. |
| [Random] | Add a planet to a random direction. Click again to change the speed of the planet. |
| [Circle] | Add a planet with a circular orbit. |
| [Size] | Change the size of a planet. |
| [Star] | Add and delete stars. By clicking the blank space you'll add the stars. By clicking on the stars, you'll delete them. |
| [Scale] | Change the scale of the screen. |
| [Speed] | Change the flow of the time. From 8 to 1/4 times speed. 0 stops the time. |
| [Reset] | Reset. |