What is the Yellow (Programmable) button for and how do I use this?

1. This is a programmable button, you have a number of options to choose from.
2. Go to the settings menu, scroll down to “Programmable Key” and select.
3. This will open a selection that you can choose your favourite from for example Camera.
4. Then select ‘OK’
5. When you return to the home screen now when you long press on the programmable button the device will go to your selected view.