The new proposal, to be unveiled Thursday by a consortium of publishers at the global headquarters of The Associated Press, seeks to have those extra commands -- and more -- apply across the board. Sites, for instance, could try to limit how long search engines may retain copies in their indexes, or tell the crawler not to follow any of the links that appear within a Web page.
The current system doesn't give sites "enough flexibility to express our terms and conditions on access and use of content," said Angela Mills Wade, executive director of the European Publishers Council, one of the groups behind the proposal. "That is not surprising. It was invented in the 1990s and things move on."
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