Bangle.js 2: How do I use it as delivered? Is there any user documentation?

QUESTION: In your new glossary has this statement:
The Launcher is the menu that lets you choose which app to 'launch'. It's usually accessible from the Clock by short-pressing the button.

1. Can you be more specific about what the short-press? (Approximate time perhaps?)
   
2. Is there a long-press? (Approximate time perhaps?)
   
3. Are there any other forms of pressing the button.
   
   

It's usually accessible from the Clock

1. What do you mean by the Clock? As far as I know, we only have the button and the touch screen with which we can manipulate the operation of the watch. (I guess there are other methods such as the accelerometers, Bluetooth and the other sensors, but I don't think the Clock is one of those.)

2. Is there a comprehensive list of all the hardware capabilities of
   the Bangle.js 2?

3. Is there an official library for developers to use to access all the
   hardware capabilities of the Bangle.js 2?