I am following along Kai's H16 hair and fur masterclass, and at about 1:07:00 he uses a guide tangent space node. In the video you can see the vectors displayed on the guide curves, but I can't see it at all. At first I thought it was because I was using H17.5, but even when I switched to 16 (16.0.557), they didn't show. Is there some sort of setting to display this?

Thanks!