Scene marks

I think I saw about 1 year ago a video in which normen used something like marks in Scene Composer, and later at that marks, different models has been placed. How I can add some marks and how use them?

Just place nodes with UserData that you later look for in the scene using a SceneGraphVisitor

So what should I put as UserData?
Name it coords, set type to float? What exactly should be in “Data”

@Skatty said: So what should I put as UserData? Name it coords, set type to float? What exactly should be in "Data"

Idk, whatever you need to place the object I suppose