The history of the early medieval Serbian Principality is recorded in the "DAI". The emperor Constantine VII Porphyrogenitus assembled it from 948 to 952 for his son and heir Romanos II. The aim was to warn the young prince on the problems which might occur during his reign. The Serbs are mentioned in the total of 8 chapters, from 29 to 36. The most important is the chapter 32, which is titled "About the Serbs and the lands in which they dwell today".