: The 7z format can split very large city models or datasets into smaller parts for easier transfer.
The file refers to a compressed archive typically used in geospatial or city planning data contexts, specifically for the City of Washington, DC . SwashingtonDC.7z
You can use 7-Zip on any computer, including a computer in a commercial organization. You don't need to register or pay for 7-Zip. Does 7z compress better than zip? - Microsoft Community Hub : The 7z format can split very large