To purge the Current Drawing By entering DWG-PURGE at the command line this plug-in will delete all the DGN unreferenced LineTypes, Regapps and Annotation Scale Also a dialog box will show with list of any XRefs attached to the drawing that needs to purge. You control this setting from DWG-PURGE-BATCH command, whether to purge the XRef or not. By clicking 'Purge' will start to purge the attached XRefs.