Setting the Default Reference Type with XREFTYPE Variable
One of these changes to AutoCAD 2005 is a way to set it so all Xrefs being attached will default to Attachment or Overlay Reference Type. This allows you to preset set the default to work with your companies standards as some always use Attachment, while others use Overlay Reference type. This change only affects the XREF dialog box and not the Command Line equivalent of -XREF. This new variable is called XREFTYPE and its values are listed below.
0 (Attachment) - Xref dialog box defaults to Attachment for Reference type
1 (Overlay) - Xref dialog box defaults to Overlay for Reference type
Enter new value for XREFTYPE <0>: 1
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