This category gathers service and reference materials about the Nizhny Novgorod Encyclopedia itself: its structure, working principles, and project history. It describes the roles of participants — editors, experts, and administrators — as well as article formatting rules and the accepted abbreviated names of Nizhny Novgorod terms.
Some materials are devoted to the project's broader context: comparisons with other regional wiki encyclopedias, partner programs, and thematic events such as the Nizhny Novgorod Phenomena Weeks. The category is addressed primarily to authors and editors who want to understand how the encyclopedia works.