Category:Wikipedia style guidelines is the peakstyle guide category for pages related to standards for the design and writing of Wikipedia articles. A page may be considered a style guideline if it a) is actuallya formal Wikipedia guideline, and b) is intended to help keep the formatting, grammar, and style of Wikipedia'sarticles consistent.
Wikipedia guidelines (or sections thereof) that are not part of theManual of Style, but nonetheless contain style advice – for exampleWikipedia:Citing sources – may be categorized here automatically by using{{Subcat guideline|style guideline}} at the top of the page or section, or by just including the category at the bottom of that section.
Please post a message atWT:Manual of Style if you are thinking of adding a page to this category. We encourage people to write style advice on new topics, if advice is lacking and disputes have been erupting, but most style issues we need to cover are already covered, and if a new one arises, group efforts work best, not individual essays; most topical style guidelines were developed first as wikiproject style advice essays. If you have created a new topical wikiproject and decided that creating a style guide for articles with its scope is the next step, you are probably mistaken, or Wikipedia would have many hundreds of such pages instead of a few dozen.