2.1.5 [W3C-P3P1.0] Section 22.214.171.124, The HINT element
A site may declare a policy reference for itself using the well-known location, the P3P response header, or the HTML/XHTML link tag. It MAY further provide a hint to additional policy references, such as those declared by other sites.
All Document Modes (All Versions)
The HINT element is not supported.