How to only show the paths of Greace Pencil strokes?

I accidentally inputted a shortcut while drawing in a Greace Pencil object and now only the paths of the strokes are shown.

Now I'm curious about what key combination it was and how to leave this view.

I believe it was Ctrl + T (unfortunately I cannot test this because I stuck in the path-only view).

Here is an example:

I'm using Blender v2.83.2.