P611.7z

A "solid" archive treats all files as one single data block, which significantly improves compression ratios for similar files [1]. Using Command Line (7-Zip)

-m0=lzma2 : Uses the compression method (default, highly efficient). -ms=on : Enables Solid archiving (default for 7z). p611.7z : The name of the resulting archive. .txt : The source text file. Steps for 7-Zip GUI (Windows) p611.7z

To create a (specifically named p611.7z in your example) containing a text file, you can use the 7-Zip command-line tool, which is ideal for this task. A "solid" archive treats all files as one