: It may be a specific iteration of a compression test (Krypton tier) used to measure the efficiency of the LZMA or LZMA2 algorithms.
: Smaller file size and better protection against minor data corruption when combined with recovery records. Kr1.7z
: Slower individual file extraction. To get a single file from the middle of a solid Kr1.7z archive, the decompressor must decode all preceding data in that solid block. Potential Contexts for "Kr1" : It may be a specific iteration of