XREF command
Opens the Attachments panel.
Icon:
Alias: XR, CLASSICXREF, ER, EXTERNALREFERENCES
Description
Opens the Attachments panel to display it in the current workspace. The Attachments panel appears at the same size and location that it did before it was closed or collapsed. Like any other dockable panel, the Attachments panel can be either floating, docked or stacked.