Very rich vocabulary as current professional and above all, there are a lot of expressions and examples. I had before the Shorter which was already very good, but we clearly goes to a higher level. The software is easy to use and searches are fastest. The screen display is excellent, an important point for me. I've read complaints about the use that previously required a CD. Information taken (before my purchase) and found (since my purchase), this is no longer the case. In short, I am delighted with my purchase.