You can attach DGN drawing files (DesiGN files) as
underlays.
The files are linked as references to the current drawing.
The .dgn
files originate from
MicroStation®
or other CAD software.
In DGN files,
you can separate
a drawing
into
Design Models
that
are individual workspaces
that
define design
geometry.
When you attach a DGN file
that
contains multiple Design Models, the specified model is referenced.
You can specify layer visibility of a DGN Underlay.
If you select a DGN Underlay in the graphics area
and
you
activate
the
ribbon,
the DGN Underlay contextual tab appears.
The
tools on the contextual tab let you clip and change the appearance of the DGN Underlay
against the graphics area.