Orphans (the page exists, but it has no links to it)
  Wanted (the page does not exist, but there are link(s) to it elsewhere on the site)
  Valid (the page exists, and it can be reached through a link)

Orphans (the page exists, but it has no links to it) ~~ORPHANSWANTED:orphans~~

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Wanted (the page does not exist, but there are link(s) to it elsewhere on the site) ~~ORPHANSWANTED:wanted~~

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Valid (the page exists, and it can be reached through a link) ~~ORPHANSWANTED:valid~~