1ECMA-48: 2 http://www.ecma-international.org/publications/standards/Ecma-048.htm 3 4Xterm Control Sequences: 5 http://invisible-island.net/xterm/ctlseqs/ctlseqs.html 6 7Digital VT100 User Guide: 8 http://vt100.net/docs/vt100-ug/ 9 10Digital VT220 Programmer Reference Manual 11 http://vt100.net/docs/vt220-rm/ 12