2008

Overlays allow multiple scene references without the risk of creating circular
dependencies. The scene XRef marked as overlay is loaded only into the master
scene that references it, and is not visible in other scenes that might XRef the
master file that uses the overlay. See
Overlays on page 6757 for more
information.
WARNING If you turn off the Overlay flag for an existing XRef scene, you can
cause circular XRefs to occur, that aren’t detected until you or another user tries
to open one of the scenes in the project.
Merge Click this to merge selected XRefs into the scene as real geometry. A
prompt appears so you can confirm the action. Since a merged XRef becomes
part of the scene and is no longer an XRef, its name is removed from the list.
Update File group
Determines how and when the XRef scenes are updated. These options are
applied to the selected XRefs; for example, one XRef can have automatic
updating, while another can have manual updating (using the Update Now
button).
WARNING If you update an XRef in a scene with radiosity on page 5976 , you will
likely invalidate the radiosity solution. After you update the XRef, reset the radiosity
solution and then recalculate it.
Automatic When this check box is turned on, the selected XRef scene is
automatically updated when its source scene is saved.
Update Now Click this to update a selected XRef scene when you’re not
using Automatic (or when several XRef scenes are selected and some of them
are not set to Automatic). When you click Update Now, the XRef is updated
to match the latest saved version of the source scene.
Display Options group
These options let you specify how the selected XRefs are displayed in viewports.
These options have no effect on the rendered scene.
Visible Turn on or off to display or hide the selected XRefs. This affects the
visibility of the XRef in the viewports only (not in renderings). Note, also,
that this behavior is different from the “Enabled” check box. Turning off
Visible does not remove the XRef from memory.
Box Turn this on to display the selected XRefs as bounding boxes. Turn off
to display the full geometry.
External References (XRefs) | 6767