I'm a little suspicious; how much of an expert can you be writing 100 books on a variety of subjects.

Reminds me of a tech instructor I had who proudly informed the class he teaches oracle classes, mysql classes, sql server classes, cisco classes, juniper classes, .net development classes, php, etc..... Yeah he couldn't answer any basic questions that strayed from the text book in front of us.

":x" this will 'save and quit'. It is much more efficient then the ":wq" that most people learn.