Wikipedia

Wikipedia is a collaboratively edited encyclopaedia. Its English-language website provides introductory articles across a broad range of subjects, with references and links for further reading. It is useful for establishing terminology and discovering source material. Articles can change over time, so their references and revision context are relevant when using them for research.

Wikipedia articles combine encyclopaedic explanations with references to underlying sources. The citations and the context of an article are useful parts of investigating a subject beyond a quick definition. Following the original sources helps a reader understand the evidence behind a statement and locate material with a more specific perspective or level of detail.

It is useful for investigating a term, subject or reference question. Its focus includes English encyclopaedia articles, References and further reading and Topic and terminology discovery, helping a visitor identify what kind of answer or source the service provides and where the original material needs to be read in context.