Preview The public domain MVS 3.8J OS exists in many packaged variations! That is, a specific installation can be a turnkey system such as TK3, TK3UPD, or TK4-, not to mention customized do-it-yourself (DIY) systems. Each of the above stated systems have specific freeware / shareware / home-grown utilities or products! Suffice it to say, not all systems are the…