Layers
Layers are virtual levels in a drawing, analogous to acetate tabs (overlays) in traditional drafting. Layers enable you to sort objects in your drawing by type, by creation order, or by any criteria that suits the way you work. You can also use layers to protect certain objects from being edited or deleted.
...
Print Style: Specifies the Print Style to be used by objects on that layer. Print Style Options.
VP Columns in Layers window: In addition to the main columns in the Layers window there are five columns with a VP prefix. VP stands for Viewport, and these columns are use to control how objects will appear within a selected viewport.
...
Layer Prefix: By default, the layers are named "Layer 1, Layer 2," etc. You can change or remove the prefix. The @ symbol is a placeholder for the automatic layer number.
Note: Many of the functions available from the Layer toolbar are also available by right clicking and opening the local menu.
Creating a New Layer
- Open the Layer manager by selecting Format / Layers, or by clicking the Layers icon on the toolbar. A dialog opens. In the dialog, right click on Layer and select new layer. Then assign a name for the layer in the Layer column (or accept the default name).
- Adjust the various layer settings, such as color and line style.
...