Left and right for hot and cold, up and down for more and less flow. Very intuitive.

It sems these days shower valves have all been enshittified to have exactly one dimension, which proceeds from "off" to "small trickle of cold water", then "slow flow of warm water", and finally "slow flow of barely hot water".

> Left and right for hot and cold, up and down for more and less flow. Very intuitive.

Unless someone wired the cold/hot in reverse, which happens surprisingly often.

Otherwise, agreed. Should be obvious and intuitive the first time you start using one.