I connected a bluetooth keyboard on my chromecast android tv, but I've been having a hard time finding a reference for what you can do with the keyboard. Is there a standard keyboard shortcut that let you do the back action for example? My bluetooth keyboard has an 'android' mode and the icons on the top seem to match with their function, but there is no back option on the keyboard itself.

So far with experimentation i've found the top row corresponds with what the icon says, and the windows button goes into a search mode. Arrow keys, the space bar and the enter key seem to do something, and the esc key does something sometimes.

The top row is: home, reduce brightness, increase brightness, search, rewind, play/pause, fast forward, mute, volume -, volume +, screenshot and lock.