![Orbital [PEN] v1.14](https://cdn2.scratch.mit.edu/get_image/project/362105566_480x360.png)
● [Drag] or [Click] to create a planet or star. ● [Arrow keys] or [Space + Drag] to change pos. ● Press [0] ~ [9] number to select a body. * ([0] is the middle of the universe.) ● Press [P] to pause. [U] to toggle UI. ● Press [D] or [Delete] button and click a body to delete. ● Press [C] or [Clear all] button to delete all bodies. ● Press [M] or [Custom mass] button to set mass by text. ● Press [A] or [Custom input] button to add a body by text. * Input "cease" when you want to quit the text box. Tip 1) Type of "Stationary" is free of gravity. Tip 2) When you input negative mass in the text box, it will have repulsive force.
