Display of information in preview

I often see lengths and other information displayed in Rhino preview during a tutorial video of GH even though the only display element on the GH canvas is a Dot Display…is Tag 3d being used but hidden somehow from the canvas ?

There must be an Evaluate Curve component somewhere…

yes…I can get this much to show but not the active text labels

Add a horizontal plane and concatenate t and the slider output like this:

thanks…horizontal frame did the trick