Rebekah Wolf uses xref files and often needs to know which layer holds an object in that referenced file.

"The regular List command will tell you which layer the xref is on, but nothing about the objects within the xref. I frequently use the Xlist command to identify objects and their respective layers that are referenced into a sheet.

"Start the command, then select the object. A window pops up providing the object, layer color, and linetype details. You can only select one object at a time."

Notes from Cadalyst Tip Patrol: The Xlist command is an Express Tool. It works similarly to the List command. This approach also works on blocks.