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.
a series of posts to help users understand how chat works.
for a general question about how content disputes are managed or what locking a post means. Concerns about a specific post should use a different tag such as [questions].
for questions and discussions about restricting types of questions, question topics, and specific text within a question's title or body.