AIN

'''AIN''' is a 1990s [[DOS]] compression/archival format, apparently produced by a shareware program of the same name. Not much information is available on it, beyond what has already been stated (which is to be found on several copying-from-each other "format information" sites<ref>https://wikiext.com/ain-ain-compressed-file-archive</ref><ref>https://pc.net/extensions/file/ain</ref><ref>https://www.azfiles.net/extension/ain.html</ref><ref>https://fileinfo.com/extension/ain</ref>). The webpage of a format identification program<ref>https://web.archive.org/web/19981203161119/http://ameba.lpt.fi/%7Eeerheino/shs/shaid.htm</ref> links its name to the list of software produced by a since-defunct company called "MicroFox"<ref>https://web.archive.org/web/19990203234357/http://ourworld.compuserve.com/homepages/microfox/programs.htm</ref>; however, the only compression utility listed there, called "PUT" (the decompressor being called "GET"), writes to files with the extension .put in an extant copy<ref>https://archive.org/details/msdos_festival_PUT345</ref>, and is listed separately on the identification software webpage.