.7z (7-Zip compressed archive, typically offering high compression ratios).
Based on a search of available information, there are no public, reputable technical documents, databases, or specific software reports detailing the contents, purpose, or source of a file named "." R0715.7z
Because this is a ( .7z ), its contents are unknown without the file itself. .7z (7-Zip compressed archive
A backup of code, a patch, or a software release. there are no public
Because file names can be arbitrary, from unknown sources.