Creating a Surface in Civil 3D

This video demonstrates how to create a surface in AutoCAD Civil 3D 2017. Also, I demonstrate how to define the surface by adding the point group All Points to the surface definition.
(Recorded with screencast-o-m...)

[@ccho907]

Why the C-Tinn surface selection? What does that mean?

[@edu33625]

NICE!

[@ryanweber153]

Thanks.

[@skamash1]

How big the area is? one acre more or less