The most lasting monument to Dušan's rulership was a law code. For the purposes of Dušan's Code, a wealth of charters were published, and some great foreign works of law were translated to Serbian; however, the third section of the Code was new and distinctively Serbian, albeit with Byzantine influence and attention to a long legal tradition in Serbia. Dušan explained the purpose of his Code in one of in his charters; he intimated that its aims were spiritual and that the code would help his people to save themselves for the afterlife. The Code was proclaimed on 21 May 1349. in Skopje, and contained 155 clauses, while 66 further clauses were added at Serres in 1353 or 1354. The authors of the code are not known, but they were probably members of the court who specialised in law.