: A free, open-source file archiver that provides high compression ratios. It can open and create .zip files and its own proprietary .7z format . 2. Potential "TION" Identifiers

If you are dealing with a file named TION_0077.zip , it is a compressed archive.

If you are trying to open a file with this name and receiving an error: Extracting a zip file - IT-Helpdesk - Helsinki.fi