It is now possible to buy paperback copies of 'The R Inferno' and 'S Poetry'. I think it is a bit silly to buy them, but silliness that I won't discourage. See: http://www.portfolioprobe.com/2012/01/12/physical-books-of-the-r-inferno-and-s-poetry/ for links to both free and costly versions, and why you should care. -- Patrick Burns pburns at pburns.seanet.com twitter: @portfolioprobe http://www.portfolioprobe.com/blog http://www.burns-stat.com (home of 'Some hints for the R beginner' and 'The R Inferno')