#3 Quit full screen visualization by pressing ESC key

[Javier]

The only way to quit a full screen visualization (play button) is by pressing Alt + F4.
When using a tablet for instance this combination of keys cannot be pressed.
Some tablet PCs have specific keys such as ESC.
A possible way to solve this problem would be to allow to quit a full screen visualization by pressing the ESC key.
Another solution would be to verlay a QUIT button on top of the sketch.