A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.
and is not on-topic, or within scope, for this site, and therefore what questions can and can't be asked here.
For discussion about what tags and tag synonyms we should have on the main site.
Questions concerning the [Help Center][h]. [h]: http://mythology.stackexchange.com/help