what does the "glazing" brush setting do?

[candybaroque]

i dont understand the "glazing" quality or how it works. i wish to make a brush that will darken when the stroke overlaps itself, and any advice i see for that mentions glazing. however, when i play with the slider, it doesnt do that. it makes the stroke less opaque. how do i achieve my goal?

[MarkPlewis]

The manual says the following:

Glazing impacts how colors are laid down when at low opacity. Each stroke will have the same tone and will not get darker until the stylus is lifted and put down again on the canvas. You only notice the impacts of the glaze settings when using low opacity brushes, at the purpose is to lay down consistent tones. You will create a uniform color no matter how many times you go over your strokes, as long as you don’t pick up your stylus.

https://www.luckyclan.com/artstudiopro/artstudio_pro_manual.pdf