The Smart 3D work area definitions, or retrieve filters, are classified objects that are used to filter the information that a user synchronizes between SDx and Smart 3D continuously. Because they are classified objects, a tree is used to separate and distinguish between the different types of filters.
Internal Work Area definition - used by internal users (users associated with an internal organization) to define what is synchronized with the 3D model. These filters are used internally to make changes to the project.
External Work Area definition - used to limit what can be synchronized by external users (users associated with an external organization, like an EPC) to populate their 3D models. If this filter is used, the tags returned by list or graphical queries are items that are referenced by the work area definition.
View filter - used by either internal or external users and is a graphical view filter only.