for questions about how tags work, the features of tagging, and what are the most appropriate tags for a question. To request a tag change, use retag-request.
Every question asked on Stack Exchange can have up to five tags that categorize the question.
Meta sites have tags that need to be present in the question, which are bug, support, discussion and feature-request; there are also tags that can be added only from moderators, such as faq, featured, and status-declined, which are shown with a red background.
For more information see the section on tagging in the FAQ.
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