ECMA-48: http://www.ecma-international.org/publications/standards/Ecma-048.htm Xterm Control Sequences: http://invisible-island.net/xterm/ctlseqs/ctlseqs.html Digital VT100 User Guide: http://vt100.net/docs/vt100-ug/ Digital VT220 Programmer Reference Manual http://vt100.net/docs/vt220-rm/