To Edit a Nested Xref in a Separate Window

1. Select an xref that contains nested xrefs.
2. At the command prompt, enter XOPEN and press Enter.
3. In the Open Reference Files dialog box, select a nested xref from the reference tree. Ctrl-click to select multiple xrefs.
4. Click Open.

   The source file for the selected xrefs opens in a new window, where you can edit, save, and close the drawing.