Law 4 of 1898 regulated the creation and standardization of place-names. The enormity of this task led to the establishment of National Place-Name Registry, headed by the director of the Royal Hungarian Central Statistical Office. Paragraph one states that every locality can have only one official name. The work took until the outbreak of World War I to complete. A significant number of changes were required on maps of Hungary as a result. The map, from 1900, shown allows us a glimpse of the ongoing process of place-name standardization.