A split archive is like a single book torn into several chapters. You cannot read Chapter 2 (the .002 file) effectively without having Chapter 1 (.001) and all subsequent parts.
: This refers to 7-Zip , a high-ratio compression format. It means the data inside is compressed using the LZMA or LZMA2 algorithm. 3g2m.7z.002
: Choose "Extract Here." The software will automatically pull data from the .002 file as it works. A split archive is like a single book