tn3270
     
        a program, similar to telnet, used to connect to remote
        ibm mainframe hosts, many of which do not understand
        telnet.  the program emulates a 3270-type terminal.
     
        for many tn3270 versions, the "clear screen" function is
        activated by typing control-z.  when logged on to an ibm host
        and "holding" or "more..."  appears at the lower right corner
        of the screen, the "clear screen" function must be entered to
        display the next screen.  tn3270 emulations usually include
        function key definitions.
     
        1994-11-03
     
     
see also:
telnet ibm mainframe host 3270 function key