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The archiving is started automatically and cleans up each space according its configuration. If the last update of a page, or any of its children for that matter, dates back the configured amount of days then it will be archived. As Note that a special case a page is also considered updated if any of its children is updatedonly considered for archival when all its children are also - the same holds for the expiration tracking.
After the right pages have been discovered all of them are moved to the archive space. To keep the archive organised there exists one such space for each actual space - it has the same name with (Archive) appended. Pages that are moved there vanish from the space they belonged to, but they keep all information - most importantly their change history and their position in the hierarchy of archived pages.
The archiving process runs archival is processed once every week at an optimal time slot determined during installation.
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