X
The extension means the file is a compressed package. To view the "draft" or contents, you would typically need a tool like 7-Zip or WinRAR . Common Contents of Such Archives If this is a software or game "draft," it likely contains:
While the exact "draft piece" contents are not public in a single searchable document, "C.O.S." is often an abbreviation for several entities in digital archives:
: A label sometimes found in older FTP archives and scene releases. Understanding the File Type
: A common name for independent game mods or projects.