Anglo-Norman language general use of the word "acre" for land measurement in Normandy until metrication in the 19th century, but these words are probably linguistic traces of Saxon or Anglo-Scandinavian settlements between the 4th and the 10th centuries in Normandy. Otherwise the direct influence of English in mainland Norman (such as "smogler" - to smuggle) is from direct contact in later centuries with English, rather than Anglo-Norman. When the Normans invaded England, Anglo-Saxon literature had reached a very high level of development. The important Benedictine monasteries both wrote chronicles and guarded other works in Old English. However, with the arrival of the
Anglo-Norman language century, Latin was the language of all official written documents. Nevertheless, some important documents had their official Norman translation, such as the Magna Carta signed in 1215. The first official document written in Anglo-Norman was a statute promulgated by the king in 1275. Thus, from the 13th century, Anglo-Norman became used in official documents, such as those that were marked by the private seal of the king whereas the documents sealed by the Lord Chancellor were written in Latin until the end of the Middle Ages. English became the language of Parliament and of legislation in the 15th century, half