[1] Internet Explorer and Custom HTTP Headers - IEInternals - Site Home - MSDN Blogs ( 版) http://blogs.msdn.com/b/ieinternals/archive/2009/06/30/internet-explorer-custom-http-headers.aspx
X-Meta-MSSmartTagsPreventParsing
Introduced in IE6 Betas for a “SmartTags” feature which never shipped in the final version. This meta tag has no effect on any non-beta version of IE.