Usage note: As part of the Userbox migration, use this template for archive pages on a single topic. A list of sample topics is at User:GRBerry/Userbox migration.
To be included in the "See also: Mixed-topic archives" link, add pages to the list of mixed-topic archives. To be more specific for this template, split mixed pages into subpages, e.g., "User:<Username>/Userboxes/<Topic>", then link them here.