What are layers and classes and how do you control them in VW.
1:20 Layers
2:20 Make a new Layer
2:45 Layer View Options
4:00 Switch between layers
5:20 Right Click Pop up menu
5:45 Layer Viability Show/Hide/Grey
6:45 Organization Window
7:30 Classes
8:15 Make a new class
8:30 Move objects between layers or classes with Object info
11:00 Paste in Place Ctrl-Alt-V
11:50 Rename a layer or class
