Great software. All have a dictation made us to understand the sound of our voice and after that queue. Having health problems (I can not write more than 10 minutes or type) this software is fantastic, he noted everything, and I think that fast and at a very fast rate and thought in any tree is noted and nothing is forgotten . No fault for the moment. The vocabulary is rich. Voice commands are very easy to operate simply say "highlight" ..... "Delete". "On line" etc. For the writing of novels, short stories, letters, mails c is absolutely great. As for Mac commands, c is superb because not need to click on the control version, it does it all alone. Maybe I should approffondir but opens safari, goes on as called while I'm dictation mode. Do not forget to save its documents even if I think that he does alone. I'm really happy I can finally surf and write again my stories, participate in forums without suffering the fingers, hands, forearm (dystonia and writer's cramp d), elbow (epicondylitis operated% but recovered to 80% where big pain again and landfills m encouraging more to write) and cervical brachial neuralgia. My shoulders are resting and arms too. The price is a bit off-putting: but what fun. I've seen 3 is great, but I find this one even faster !!!! the possibility for my spouse have his account, and that for each of us also have our account in English. I'll see if he can do it in Spanish. Really, I do not regret my purchase and my health told me thank you. 5/5. Would recommend for everyone, especially people suffering from carpal tunnel, tendonitis etc. And the helmet is of excellent quality. With current Mac book air 13 (maverick) and c is a small turbo. I recommend more than anything. ++++ Ps (have a USB driver for dvd cd ROM).