then you can use the following actions:
Request fullscreen
Request that the browser enter fullscreen mode. Note the browser may ignore this request unless the action is in a user-initiated event, such as a mouse click, key press, touch event or button press. There are three different fullscreen modes that can be entered:
Center - center the game viewport in the fullscreen view
Stretch (crop) - extend the game viewport to fill the fullscreen view
Stretch (scale) - scale (zoom) the game viewport to fill the fullscreen view
Cancel fullscreen
Return to windowed mode if the browser is currently in fullscreen mode.
Not sure if I'm not seeing it correctly, but the only action I see that has the word "Request" in it is Request Attention from User.
The only thing there that suggests Windowing is "Maximize" but that still leaves the Windows border around the game.