A post that has a making-of video or image available, either on Danbooru or off-site.
Often, a link to the making-of video is present in the artist commentary, or is otherwise posted somewhere else off-site. These making-of videos should be posted to Danbooru when possible, to avoid them becoming lost if the source is deleted.
If the picture itself details the "making of", use the making-of or how to tags instead.
