The Encyclopaedia Britannica is a general English-language reference source written for all types of users and libraries. It aims to provide reliable information on a wide range of topics through brief entries in its Micropaedia section and longer, more in-depth articles in the Macropaedia. The Propaedia section provides an outline of knowledge on various subjects. The Encyclopaedia Britannica is revised yearly to ensure up-to-date information and its format and language make it accessible to a global audience.