Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

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Tags

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.

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available to users with a reputation of 10,000 or higher.
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those questions which have no up-voted or accepted answers.
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stackexchange.com provides a way to monitor activity across multiple sites in the Stack Exchange network using customizable filters.
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held to choose moderators for all graduated sites and some long-term beta sites.
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For discussion about the explicitly commercial advertising that appears on this site (if any), as well as the Community Promotion Ads which are voted on by users of each site.
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For questions about the public lists of changes made to posts by a site's users. They are available for questions and answers by clicking the "edited X min ago" link, and on tag wikis as "history" and…
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The global inbox contains information from across the entire network about notifications regarding posts and comments you've made, from answers to your questions to @replies to your comments.
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A request to add one tag as the synonym of another tag. Please be specific about which tag should be a synonym of which. Bidirectional synonyms and cycles are implicitly disallowed, so suggest wisely.
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For issues regarding the help center of Stack Exchange.
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The standard editor for Stack Exchange posts, which supports a live preview of Markdown syntax.
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for issues of what is allowable or desirable in question titles.
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about the quarterly creative commons data dumps of all public data in the Stack Exchange network Q&A sites.
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Hot Network Questions in the right-hand sidebar, the “hot” tab on each site, and on stackexchange.com.
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For questions about the syntax highlighting performed inside code blocks on Stack Exchange sites.
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a set of tags that can be marked by a user. The questions that have favorite tags will be highlighted, and can be monitored using Tag Sets.
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for questions about the favorite question feature - indicated by the star under the voting arrows on a question. For questions about favorite tags, use (favorite-tags) instead.
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Questions about sizes and other quantities of Stack Exchange sites, e.g. number of questions, GB/day transferred, etc.
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blocked from asking new questions, or posting new answers.
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For questions about any of the emails sent from Stack Exchange sites to their users.
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when examining what is on-topic or off-topic, and why.
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For questions related to the sort orderings of questions, answers, and other lists on SE sites.
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Questions relating to the suggestion or request for one or more new badges
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For questions about the Stack Exchange API. Consider checking the API documentation and the Stack Apps site before posting your question here, it might have been asked before already.
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For questions regarding display names and what is allowed in them.
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Use with [meta] to request that a tag here on Meta Stack Exchange be removed. Use in case of uncertainty when requesting discussion, or when the popularity of the tag makes manual retagging prohibitiv…
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Flags that have been declined by a community moderator or other trusted members of the community.
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The process by which high-reputation users and moderators can vote to delete a post from the site.
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For questions about the user named Community ♦ present on Stack Exchange sites.
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Questions also answered by the user asking, easily marked by the shaded user card attached to the answer.
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the act of casting many upvotes or downvotes on the posts of a specific user without proper reason. Also known as voting fraud.
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regarding flagging comments as rude or offensive, no longer needed, or in need of moderator intervention. Also, for questions regarding the number of flags of a certain type required for automaticall…
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Users may only earn a certain amount of reputation each day, with the exception of reputation coming from accepted answers and bounties.
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For questions about linked accounts
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the act of temporarily blocking the account of a specific user.
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For questions about or problems with a user's network profile.
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Use it for questions about user accounts that have been deleted or the process of that deletion.