How is variable zoom done?

[David198502]

it is an option in the sim, unfortunately, it only works with mouse movement by default, therefore you need a third party software like joytokey, or if you have for example ch hardware, one can use ch-manager to achieve this kind of zoom as well.

but its odd, that the devs implemented this, but only half baked, and that one is not able to set this option to a button on the stick, without having to use another software.
its the same like not beeing able to use the mousewheel as an axis, which was no problem in 1946.maybe one day...