To Edit a Nested Xref in a Separate Window

1. Select an xref that contains nested xrefs.
2. Click External Reference contextual tab Edit panel Open Reference. Find

   You can also enter XOPEN at the Command prompt.

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 files for the selected references are opened in new drawing windows, where you can edit and save changes to the drawings.