This is a description of the rel="archived"
attribute value
for HTML 5. The purpose of this
value is to indicate that the target resource is archived and kept largely
or solely for historical purposes. It is most likely no longer updated and
therefore may not comply with modern standards and specifications, either
of the organisation publishing it, or of the wider web. Testing tools may
wish to disregard the target resource.
To learn about archiving historic content, please see our Tech Update