Projects set up according to standards contain both design layers and sheet layers with viewports. For more information, see Importing drawing structure from standards or other files and Concept: Classes overview. The use of automatic classing is determined with the Standard Naming setup command. The appropriate classes are created at setup and by certain other commands (see Automatically created classes).
Many plug-in objects that are included with Vectorworks Architect and Landmark products are set with pre-assigned classes. The standards for the Vectorworks Architect and Landmark products take advantage of layer and class characteristics described in Concept: Layers overview and Concept: Classes overview.