When exporting to a CAD format or DWF, you can specify a name or prefix for the exported files. In the Export CAD Formats dialog, for Naming, use one of the following options to name the exported files:
Revit Sheet/View: Project Name-View Type-View Name
Revit Sheet: Sheet Name or Revit View: View Type-View Name
When exporting multiple files, for File Name, enter a common prefix for the exported files. For example, if you are exporting the Level 1 floor plan and north elevation views to DWG files and you enter the prefix Country House, the resulting exported file names are Country House Elevation North.dwg and Country House Floor Plan Level 1.dwg.