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Tags are keywords or labels that categorize and group your question with other, similar questions.

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:

, , and .

There are also tags that can be added only from moderators, which are shown with a red background, such as:

, , , , , , , , , and .

For more information see the section on tagging in the FAQ.

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