What is "retskrivningsordbogen"

Retskrivningsordbogen is a Danish orthographic dictionary published by the Danish Language Council to establish the official spelling of the Danish language. It is sometimes abbreviated unofficially to RO.

In accordance with the Danish Retskrivningsloven (Orthography Law) the rules laid down in Retskrivningsordbogen must be followed by all areas of public administration, the parliament and authorities related to the parliament as well as the courts, although the Minister of Education may lay down detailed rules for exceptions. In practice, it is also followed by most other Danish-speaking organizations. The dictionary has around 64,000 words and contains a detailed guide to Danish orthography.