Intercity: This is the largest environment consisting of cities. Cities, buildings, and wiring closets can be created in this layer using the controls on the toolbar.

Cities: This layer contains buildings and wiring closets. The default city is named Home City. Cities can be dragged and placed anywhere on the intercity map.

Buildings: This layer contains wiring closets. The default building is named Corporate Office.

Wiring closet: This is the final layer that contains devices placed in the logical topology. Its default name is Main Wiring Closet and it doesn't have any specified area.