In general, you draw in 2D and model in 3D. You can have as many as eight drawings open. Layer and group utilities VectorWorks drawings are arranged in classes, layers, and sheets. Layers are for modeling physical layers in your drawing. In architecture, for instance, you might arrange each floor of a building on a separate layer. You set the thickness of the layer to 109.
Different layers can have different thicknesses.
When you draw a wall on this layer in 2D, it automatically has a 109 height, unless you override the layer setting. You can link layers to view an overall model of a structure, for example. The Dimension class stores information for any dimension you create in the drawing. The None class stores information for all other objects and symbols. You can add up to 254 more classes.