1 Useful links about 3270 data stream:
3 http://publibfp.boulder.ibm.com/cgi-bin/bookmgr/BOOKS/cn7p4000/CCONTENTS
4 http://www.prycroft6.com.au/misc/3270.html
5 http://www.prycroft6.com.au/misc/3270eds.html
6 http://www.prycroft6.com.au/misc/3270grfx.html
