The MirBSD Korn Shell (mksh) is
Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
        2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019,
        2020
  mirabilos <m@mirbsd.org>
Copyright (c) 2015, 2017, 2020
  KO Myung-Hun <komh@chollian.net>
Copyright (c) 2015
  Daniel Richard G. <skunk@iSKUNK.ORG>
Copyright (c) 2017
  Giacomo Tesio <giacomo@tesio.it>
All rights reserved.

The mksh logo is
Copyright (c) 2008, 2009
  Lukas U. <smultron@midnightbsd.org>
Copyright (c) 2008, 2009
  mirabilos <m@mirbsd.org>


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