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.
Questions related to the CSS (cascading style sheets) of Super User.
Requests for editing the old FAQ, which has been replaced with the help center.
about tags on the meta site
for questions specific to upvotes, the community's way of telling peers that their content was clear and helpful. Up-votes on the meta sites may have different meanings.
A moderator-only tag to communicate that a suggested change to the site is planned, but has not been implemented yet. Also used to indicate in-progress tag cleanup requests.
Questions about help pages of the site (https://superuser.com/help).