To address the topic of "solid" archives (as implied by your request for a "solid paper") within the context of this RAR file: Technical Overview of RAR Solid Archives
: Files with randomized names like CRNEZOPGHbvEK are frequently used to distribute malware. It is highly recommended to scan the file with Avast or a similar antivirus tool before attempting to extract its contents. CRNEZOPGHbvEK rar
: The primary disadvantage is that to extract a single file from the middle of the archive, the software must process all preceding data in the stream, making access slower than non-solid archives. Managing the Archive To address the topic of "solid" archives (as
how to find file info in not-first rar file? · Issue #56 · markokr/rarfile Managing the Archive how to find file info
: By analyzing redundancy across multiple similar files rather than individual files, solid archives achieve significantly higher compression ratios.