I was surprised to learn that even at this early stage there are no keyboard shortcuts for basic functions like toggling Fullscreen, Pause|Play, etc.
I hope those will find their way into a new build relatively quickly.
I do appreciate the few that we have so far.
[M] for Map
[C] for Camera
[↑] and [↓] for Walks
[←] and [→] for Spins, Panoramas, and Walls
And the Hitchhiker's Guide to the Galaxy's meaning of life for the pleasant Debug Panel