Right or middle click and drag to move the camera. Use the scroll wheel or zoom slider to zoom in and out. #Controls window [Pause/Unpause] Toggles pausing of the simulator [Normalize momentum] Sets the momentum of the system to 0 while preserving relative velocity (Stops your system from drifting off the screen) [Center of mass] Moves the camera to the center of mass [First slider] Zoom slider [Reset zoom] Resets zoom to the default [Second slider] Time scale slider [Reset time scale] Resets the time scale to the default [Create body] Click this button and then click on the simulator window to create a body at that location [Quick save] Saves the current state of the system [Quick load] Reverts the system to the saved state #Bodies panel This panel shows all bodies in the system. Use the scroll bar to scroll through them. Left click a body on the panel to edit or delete it. Right click a body on the panel to move the camera to its location.