This indicates the file is compressed using the 7-Zip archiving tool. To find out what is in this file:
Likely indicates the project or topic (e.g., Screenshot, Sample, Subject, Secret). Jul: Indicates the month of July. SS-JulSS-010_s.7z
Use a file archiver tool like 7-Zip (Windows), The Unarchiver (Mac), or a command-line tool to extract the file. This indicates the file is compressed using the