This category lists separate introduction articles, written to provide readers with a non-technical introduction to unavoidably technical subjects, as prescribed by Wikipedia:Make technical articles accessible. These articles usually provide a general overview and intuitive approach to the main topic without the intricacies and technical details that may be necessary in the proper encyclopaedic article, and as such may not strictly follow the style guidelines of proper articles. These articles serve Wikipedia's mission of presenting information to the widest possible audience. Only the most technical subjects may require an introductory article. Add the template {{introduction|MAINARTICLENAME}} to include articles in this category. Please avoid manual inclusion in this category; use the standard template instead.

This is a maintenance category, used for maintenance of the Wikipedia project. It is not part of the encyclopedia and contains non-article pages, or groups articles by status rather than subject. Do not include this category in content categories. This is a tracking category. It builds and maintains a list of pages primarily for the sake of the list itself. They are not part of the encyclopedia's categorization scheme. This category is hidden on its member pages—unless the corresponding user preference (Appearance → Show hidden categories) is set. These categories can be used to track, build and organize lists of pages needing "attention en masse" (for example, pages using deprecated syntax), or that may need to be edited at someone's earliest convenience. These categories also serve to aggregate members of several lists or sub-categories into a larger, more efficient list (discriminated by classifications).

• Category:Articles with separate introductions
• Category:Wikipedia outlines