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.

keywords or labels that categorize and group your question with other, similar questions.
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should be used when you ask a question on meta that is referencing question(s) on the main site. For example, if you have a question about why questions on Puzzling Stack Exchange ar…
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For questions about discussing the quality or appropriateness of certain questions on Puzzling Stack Exchange.
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for questions on whether a question, or category of questions, falls within the site scope
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Indicates that the report has been resolved through the implementation of a feature or the fixing of a bug.
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for posts about the fortnightly topic challenges.
for questions about answers: how to answer, whether specific answers are appropriate, and so forth.
For questions about discussing the quality or appropriateness of certain answers on Puzzling Stack Exchange.
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for questions on Meta that relate to a specific question on Puzzling Stack Exchange.
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used to hide text unless hovered over. They are done by starting lines with '>! '.
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denotes a question that is a part of the regularly held "best-puzzle" voting contests.
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for instructions and guidance on closing or migrating questions, and the reasons for those closures.
for questions about tag synonyms (how they work, who can create them, etc). Use [synonym-request] for tag synonym requests.
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Questions regarding etiquette and proper behaviour in relation to other users, SE posts, etc.
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For questions about the process of editing, how edits work, and other general inquiries about the edit system.
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for questions specifically about the process of asking questions on Puzzling Stack Exchange.
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For questions about the rules and policies of Puzzling Stack Exchange.
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For questions about the /review path where users can view and act on posts by other users that the system thinks may need attention.
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"Design" refers to front-end elements, such as page layout, coloring conventions, etc. For questions about database structure, algorithms in the code, please use the "architecture" tag instead.
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a way to get additional attention for a question by offering some of your own reputation for great answers.
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the real time, stateful web chat that's a part of every Stack Exchange site.
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small addendum to each question or answer, intentionally limited in size and formatting. Comments are second-class citizens.
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for questions dealing with moderator actions, pages, abilities or decisions.
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a JavaScript engine for displaying mathematics.
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refers to all questions deleted. The tag "specific-question" should also be used when referencing a specific question that has been deleted.
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the primary way users gain reputation, and also how many items are sorted to the top.
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A slight or indirect indication or suggestion. It helps to solve a puzzle and is usually hidden under spoiler.
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held to choose moderators for Puzzling Stack Exchange
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referring to the process of identifying and closing questions that are duplicates of another question.
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For questions about the practice of answering one's own question: rules, etiquette, suggestions, and so on.
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the answer the question owner thought best met their needs. This tag is for discussing issues related to accepted answers, not indicating that a question has an accepted answer.…
11 questions