The "Plan-A" in your file name might refer to one of the following systems that also use the "RAR" acronym: rar - ArchWiki
: Can split large files into smaller parts (e.g., Plan-A.part1.rar , Plan-A.part2.rar ) for easier sharing. Plan-A.rar
If you have a file named Plan-A.rar , it likely utilizes these standard features of the RAR format: The "Plan-A" in your file name might refer
: Includes redundancy data that can repair the archive if the file becomes partially corrupted. Plan-A.rar
: Treats multiple files as a single continuous data block to further improve compression. Contextual "Plan-A" Interpretations
: Provides better compression ratios than the standard ZIP format.