...
- To import another drawing as a block (xref), select Format Insert / Create External Reference.
- In the External Reference File Location window, select a file type and locate the desired file.
- If you want the path to the referenced drawing to be relative to the current drawing (as opposed to an absolute path), check .
- The selected file is added to the block library of the current file. You can view it and insert it using the Blocks Palette. However, you cannot edit an xref in the Blocks Palette - you must change the original file.
...
Detach: will detach the referenced file, and any insertions of that file in the drawing will be deleted. You cannot detach nested xrefs. You must open the file to which they are attached to remove them.Bind
Bind: embeds the selected XREF as a Block in the drawing. All attachment to the external drawing is lost.
...