I have the same question yesterday. But I have see this function before your explication. So I find it’s not very simply. Is it possible to have a value in pixel ?
This possibility to adjust the size of text maybe apply to the image. Because I try many adjust 1:2, 1:4… and my text is too large or too small.
(I don’t know if you understand me ? I can explain you in french if you want under the specific forum.)