Click inside the screen to send it your keyboard. On the GUI desktop, click "Lock mouse" to send mouse movement too, or "Fullscreen" to do both at once — press Esc to exit fullscreen and let go of the mouse together. A bigger screen also renders sharper, since it gives the display more room to scale up cleanly. Boot takes 10–30 seconds depending on your connection; the whole machine lives in this tab's memory, so switching tabs/VMs or reloading wipes it for a clean one every time.

Logs in on its own as tc — no password. Use sudo for root.