第一章: TXT,最通用的国际标准
请参考:
RFC文档1:ASCII format for network interchange. V.G. Cerf. Oct-16-1969.
ftp://ftp.rfc-editor.org/in-notes/rfc20.txt
RFC文档2:The 'text/html' Media Type
ftp://ftp.rfc-editor.org/in-notes/rfc2854.txt
STD文档:standard for the format of arpa internet text messages
http://www.rfc-editor.org/cgi-bin/rfcdoctype.pl?loc=STD&letsgo=11&type=ftp&file_format=txt