Tag implications are used when all images belonging to one tag should also be tagged with another, broader tag. For example, [[4koma]] implies [[comic]], as all 4komas are comics.

In general, implications are only used for general tags (as above) and copyrights (e.g. [[homestuck]] is part of [[ms_paint_adventures]]), and only in situations where the implication always holds. Some tags for channel artists also imply [[homegrown]]. Character tags do not imply their respective copyrights, as the maintenance burden for such a system would be too high.

You can request that an implication be created using the "tag implication request form":/booru/tag_implication_request/new.