1501 Computer environment details qualifier [B] Desc: A code to identify the computer environment details. Repr: an..3 1 Hardware platform Code to identify the type of hardware installed in a computer environment e.g. PC, Mac, UNIX-Workstation, Mini, Mainframe. 2 Operating system Code to identify the operating system, like DOS, VMS, etc. used in a computer environment. 3 Application software Code to identify an application software, like AutoCad, Winword, etc. used in a computer environment. 4 Network Code to identify a network like Ethernet, Token Ring, etc. implemented in a computer environment. 5 Sending system Code to identify the system, which acts as a sending system in an interchange.