Somehow....I don't know how, I managed to get very small fonts only and exclusively in edit function node. I don't know how to zoom in. If I Try to zoom in, screen in the background is zooming in, while this function editor is still very small.
Thank you for your ideas.
Hold control while scrolling
Or use the command palette (F1) and type font
Steve,
Thank you very much. This is exactly, what I was looking for. Especially my eyes are grateful ![]()
You can also set a default font size in settings.js


