2004

Attach, Update, and Bind External References | 675
To clip a reference
1 On the Command line, enter xclip.
2 Select a reference.
3 At the prompt, select New Boundary by pressing
ENTER.
4 Select a rectangular or polygonal clipping boundary, and then specify the
corners or vertices of the boundary.
AutoCAD clips the image based on the area that you specified and hides
the portion of the xref outside the clipping boundary.
Command line
XCLIP
Resolve Name Conflicts in External References
A typical xref definition includes objects, such as lines or arcs. It also includes
xref-dependent definitions of blocks, dimension styles, layers, linetypes, and
text styles. When you attach an xref, AutoCAD differentiates the names of
these xref-dependent named objects from those in the current drawing by
preceding their names with the name of the externally referenced drawing
and a vertical bar character ( | ). For example, in the Layer Properties Manager,
the xref-dependent named object that is a layer named STEEL in an exter-
nally referenced drawing called stair.dwg is listed as STAIR|STEEL.
When you attach an xref, the definitions of its dependent named objects are
not added to your drawing permanently. Instead, these definitions are loaded
from the referenced drawing file each time you reload it.
Bind Xref-Dependent Definitions
An xref-dependent named object's definition can change if the referenced
drawing file is modified. For example, a layer name from a referenced draw-
ing can change if the referenced drawing is modified. The layer name can
even disappear if it is purged from the referenced drawing. This is why
AutoCAD does not allow you to use an xref-dependent layer or other named
object directly. For example, you cannot insert an xref-dependent block or
make an xref-dependent layer the current layer and begin creating new
objects on it.
To avoid the restrictions on xref-dependent named objects, you can bind
them to your current drawing. Binding makes the xref-dependent named
objects that you select become a permanent part of your current drawing.