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.

Type to find tags:
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designed to solicit opinions or best-practices on a particular topic, with the goal of reaching community consensus.
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You need help with the use of one or more of the site's features.
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You have a question, concern, or suggestion about a tag or how tags are used on our site.
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You have an idea for a new feature, or for a change to the existing functionality.
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Indicates you've found an erroneous or unexpected behaviour in the system that needs to be fixed.
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actually due to the existing design of the system and is not considered erroneous behaviour.
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Indicates that a feature request has been implemented, a bug has been fixed, or another type of request has been processed.
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the process of moving threads from one Stack Exchange site to another.
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For questions regarding the nature of a "question" on Cross Validated; e.g. how to ask, whether specific questions are appropriate, etc.
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Indicates that a request (usually a feature request) has been considered, but will not be implemented. Generally speaking, a developer will leave a comment as to why, or the community will come to con…
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Questions dealing with moderator actions, pages, abilities or decisions.
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For questions about the process of editing, how edits work, and other general inquiries about the edit system, used in editing questions, answers, tag wikis...
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Group of questions involving Cross Validated SE preparation for the public phase. This tag is now defunct; please do not use it.
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Cross-posting refers to posting the same question on multiple websites.