How do I use the dev console planet studio commands?

Also useful: T-F-G-H move the light source up-left-down-right respectively.

Alt-F4 to exit does not work on Mac OS. I'm using a Macbook with the touchbar, but I can get the F_ keys to display on the touch bar by holding the fn key, still no joy. The only way I can close PlaneStudio after launching is to exit the program with Command+Q.

From the release notes a while back:

Added a couple dev console commands to help with XML modding planets and solar systems. Use 'CloneSolarSystem id' to make a copy of the current solar system and update your game state to reference it. Use 'PlanetStudio planetName' or 'PlanetStudio planetName quality' to open a scene with the specified planet. WASD & IJKLUO move the camera (shift/control for fast/slow). Keypad +/- to adjust speed. Space to lock to the surface. SolarSystem.xml changes should automatically be recognized and cause the planet to regenerate itself. Alt-F4 to exit.