Cadtop provides a range of commands to support the management of X-Ref's within a drawing:

• Management: The user is able to control the behaviour of X-Ref's by amending the properties of each X-Ref. The properties of an X-Ref include: the retrieval location, whether an over-write occurs if there is an existing drawing with the same name, and if the reference is static or dynamic.

• Create/Attach: Allows the user to create a new X-Ref for a drawing stored in a Docbase. The attach commands allows an existing X-Ref in the drawing to be selected and referenced in the Docbase.

• Details/Modify: The properties of a drawing that have been referenced can be displayed. The user can modify the properties of an X-Ref.

• Detach: The user is able to detach a reference between two drawings.

• Reload: Upon selection of an X-Ref, a user can reload the corresponding drawing from the Docbase.

• Latest Revision: To ensure that a drawing is referencing the latest revision of another drawing the user is able to replace a drawing with its latest revision.