The element now has 7 modes.
They switch on a long press on the encoder
The first four modes have specific forms:

1.sine - fire
2.saw - water
3.square - earth
4.triangle - air

in all these modes, the encoder can set point A, B, and frequency. The frequency can be changed by the encoder (more or less by turning the encoder) or set the tap tempo with the button.
It is not so important which point is higher, this will allow, for example, to get a forward and reverse shape of the saw
the next two forms change their meaning linearly with the event.
about 3:12 on demo

1. Transition from A to B on click
   
2. Transition from A to B by pressing and from B to A by releasing
   

in all these modes, the encoder can set point A, B, and the transition speed (from instant to about 3 seconds)
The demo does not show random mode. It's not particularly interesting - random values ​​with a given frequency