Difference between OWL Lite, DL, and Full

For last two years, I have been working on a project involving Web Ontology Langauge (OWL). During this time, I learnt a lot about philosophical ontology, AI ontology, and OWL. However, one question that always kept coming back was about the differences between OWL Lite, DL, and Full. Although, I have scaned W3C OWL reference [...]