How to zoom in Xcode 11 Mini-map?

Question

In WWDC 2019 Session 401 "What's new in Xcode", at about 6:30, the presenter shows the minimap and manages to "zoom in" it.

I couldn't find how to do this.

So how to zoom in/out of the minimap?

Answer 1

The presenter uses Command + + (and Command + -) to enlarge the text in the editor, which also makes the minimap bigger. As far as I know, there's no way (yet) to resize the minimap itself.