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.
You need help with the use of one or more of the site's features.
For discussions about the site's scope - what questions and topics should and should not be on-topic on the site.
for Meta discussions about a specific question on the main site.
For discussions about the site's tags - what tags we should have (and which ones should be removed), and what topics each tag should or should not include.
Applies to meta questions about "homework"-tagged questions on the main site.
For questions about MathJax, which is used to write mathematics on Stack Exchange sites.
Feedback relating to the appearance of the site.
Indicates that the reported behavior is intentional and not subject to change
For questions about the /review path where users can view and act on posts by other users that the system thinks may need attention.
For (meta) questions about the policy to disallow non-mainstream physics questions on the main site. For details, see the tag wiki.