Compression and archiving programs are able to process two main tasks. These programs are able to compress files and create archives. Nowadays, the processes are considered synonymous. They are actually referring to two very different things.Archiving refers to the process of saving several files in one container. This process requires that the information that makes up the files is converted to another format. This is so all the information can be stored together in one file. The archives also contain descriptions about the files which allow them to be unpacked properly.Compression involves converting information to lessen their file size. This often involves using a single character to stand in for strings of data. An algorithm is often used to determine how the translation would happen. Compressed files have a smaller file size than the original.The file extension .lzs is used by compressed archives. Compressed archives with the LZS file extension are created by the LARC program. LARC was developed by Kazuhiko Miki. The program was based on an earlier program called LZSS.LZSS was developed by Haruhiko Okumura. It was created as part of a magazine article intended for publication in 1987. When the magazine was discontinued, Okumura decided to distribute it on a Japanese BBS (Bulletin Board System). The software was uploaded and hobbyists later continued development on it. Miki was one of the programmers who worked with the released source code for the LZSS program.Like LZSS, LARC uses a sliding dictionary algorithm to create compressed archives with the .lzs file extension. A sliding dictionary algorithm depends on the previous string of data to determine the encoding of files. If a piece of information is repeated, the algorithm will refer to how many characters it has to go back to repeat it and how many characters makes up the information to be encoded.Compressed archives with the LZS file extension contain characters and encoding in this format: <position, length>. Files with the .lzs file extension can hold several files.The LARC program was later distributed and developed by Simtel Legacy. Simtel is an archive of software that was previously distributed on the BBS network.