IPSUR book used LyX-Sweave

Jay Kerns wrote a book titled "Introduction to Probability and Statistics Using R" or IPSUR for short. He has put up a web site for the book and Rcmdr plugin. There are at least two very important points from my side (I did not read the book, yet): 1. it is free to download (thank you Jay!!!) and 2. it was written with the help of LyX-Sweave. This shows that combination of LyX and Sweave is really powerful.