Antone Roundy wrote:
The following two bits seem incompatible with each other:
o atom:entry, atom:feed and atom:source elements MUST NOT contain
more than one 'license' link relation with the same
combination of
type and hreflang attribute values.
Note the caveat, "with the same combination of type and hreflang
attribute values". The idea is to prevent a single license from being
appearing more than once.
Multiple license link relations MAY be used to indicate that the
informational content has been published under multiple copright
licenses. In such instances, each of the linked licenses is
considered to be mutually exclusive of the others.
