Thanks for clarifying. That’s one nice thing about the 769M5E, where the direct access flap toggle switch on the handle goes from full flow to a slight trickle. No need to cycle through modes. There’s also 6, and I find I make use of 3. Bort said his acts like a ramp, which is a great idea. Nice to be able to control the flow in an analog fashion without having to muck with the main water control of the shower.
It’s not if people learn from them, mate. 
Ours have temperature and volume displays, which also change colour with temperature, from blue to purple to red.
60 litres at 36 degrees is nice enough.
I build one after my wife gave birth, It is a diverter on a bathroom faucet, a shower hose, and kitchen shower with a valve. flow and temp is regulated by the faucet itself, no splashes anywhere where you do not want it. It was supposed to be a temp. measure, but 2.5 years later it is there and we still use it for more than just a bidet. We still wash up the kid in the sink every might before putting him to sleep. It is one of the best home improvement ideas we did in a long time.
That is how i know stream of water alone, even a strong one will not always clean everything off.
As far as i know, there is only 1.6gal per flush law in usa. i’m not aware of showers and faucet restriction laws. i know when you install small tankless heater for a faucet you need a restrictor, those small units can not handle med to high flow rates. but it is mostly done in bathrooms, in commercial properties, those are rarely installed in homes.
Thats really interesting.