- Pagination tab: query or path form, per-locale segment, title and
description suffixes with %page% and %pages%
- ?page=1, /<segment>/1 and the other form answer 301 to the configured
address in one hop with normalisation and strict URLs; a page value
that is not a number answers not_found with pagination.invalid
- page 2 and later: self canonical with the page, index,follow, the
suffixes (%pages% left for the layer), paged hreflang alternates
- GET /site answers pagination {form, param, segments} and home_crumb
