As described in HTML4 Meta data profiles and XHTML Meta Data Profile (XMDP) description:
A libreoffice bug is defined in BugReport Details and in the bugzilla form.
HTML4 definition of the 'rel' attribute. Here is an additional value as defined in the rel-tag specification .
HTML4 definition of the 'class' attribute. This meta data profile defines some 'class' attribute values (class names) and their meanings as suggested by a draft of "Hypertext Links in HTML". All values are defined according to the semantics defined in the BugReport Details.
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