For questions asking for tips on golfing in a specific language, doing well in certain challenge tag, or improving a particular piece of code.
Most tips questions are for collecting helpful tips for golfing in an particular language. Sometimes it's also used for tips for a certain type of challenge or for asking how to handle a commonly-occurring situation in a language. This tag has also been used for questions regarding constructing golfing languages.
This tag is also used for questions which ask for specific advice in reducing further a particular piece of already functioning code that you post in the given language. You should be clear on what you're trying to achieve and what you've already tried. See this meta post for advice.