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Template:Historic
From OeisWiki
Use the {{historic}} template to mark an item (article, category, template, file, ...) as historic, i.e. an item that should NOT be deleted, modified or updated, and also that should not be taken as state of the art.
The above banner will be shown, and the item will automatically be categorized in Category:Historic items.
Please remove the {{historic}} tag if you plan to revive it.