2.1.24 [HTML] Section 12.4.1, Resolving relative URIs
V0036:
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Additionally, the OBJECT and APPLET elements define attributes that take precedence over the value set by the BASE element. Please consult the definitions of these elements for more information about URI issues specific to them.
All Document Modes (All Versions)
The codebase attribute of OBJECT or APPLET elements is not combined with any other attributes of OBJECT or APPLET elements in order to generate a new BASE URI. The BASE element is applied in order to resolve relative URLs.
V0037:
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Note. For versions of HTTP that define a Link header, user agents should handle these headers exactly as LINK elements in the document. HTTP 1.1 as defined by [RFC2616] does not include a Link header field (refer to section 19.6.3).
All Document Modes (All Versions)
The Link HTTP header is not supported.