http://www.ibb.net/~anne/keyboard.html Consistent BackSpace and Delete Configuration terminal
http://www.cs.utk.edu/~shuford/terminal_index.html terminal
http://www.aplawrence.com/Unixart/terminals.html terminal
google vt100 vt220 spec in the newsgroup


http://www.faqs.org/rfcs/rfc980.html rfc890 提到 Telnet Protocol 相關的 rfc


http://www.blogger.com/blog.pyra?blogID=5796178