: A versioning or serial marker, indicating this is the sixth installment in a series of data sets.
While the exact "deep meaning" of a compressed file depends entirely on its contents, The Anatomy of the Name FLK-TC-S-006.7z
Without the specific source, this naming pattern is most common in: : A versioning or serial marker, indicating this
: Many technical collections (TC) are created to preserve software, documentation, or firmwares that are no longer supported by their original manufacturers. They serve as a library for legacy systems. : A versioning or serial marker
: If "TC" refers to TrueCrypt (or its successor VeraCrypt), the file is a secure vault designed to keep its contents private from anyone without the key.