Hiding Soft Buttons

Here's the Show Controls with the "GMD Full Screen Immersive Mode" on. The red line on the right indicates that you swipe it to reveal your soft buttons. It actually hides the soft buttons and the screen info on the top of the screen (Device name, wifi signal, battery, and time display.)

The buttons are still a little big for the Amazon Fire 7" 1024x600 resolution.

Here's the Device list screen.