The DGNWS file, full name DGN WorkSet file, is very important. It contains WorkSet properties, custom properties, WorkSet sheet index, and the WorkSet Link Set. Each of these, other than the sheet index, involves some initial data input. As a project proceeds the sheet index will build up automatically. If a DGNWS is accidentally deleted a new blank DGNWS will be created, any data will be lost, so this is a file that needs…