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Subject: Bracketing Refs [Authority Resolution]
This proposes a bracketing scheme for outputting Refs during the authority resolution phase. This provides a human and machine readable way to negotiate a nested Ref resolution hierarchy. <XRDS> <XRD-A /> <RefRes> <XRD-E /> <RefRes> <XRD-H /> </RefRes> <XRD-F /> <XRD-G /> </RefRes> <XRD-B /> <XRD-C /> <RefRes> <XRD-I /> </RefRes> <XRD-D /> </XRDS> The <RefRes> element is used to bracket the XRDs necessary to resolve a Ref. The <RefRes> element MUST appear between two <XRD> elements. (It would never fall at the beginning or end, and two <RefRes> elements would never appear together.) The final <XRD> in the <RefRes> is that used for the subsegment resolution of the <XRD> that follows the <RefRes>. Therefore, in the example above, the subsegment resolution XRD chain is: G, B, I, D Note that, since the <RefRes> "replaces" the preceding <XRD> from a subsegment resolution standpoint, the number of (top-level) XRDs in the <XRDS> is always equal to the number of authority subsegments. ~ Steve
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