R tips

If you are looking for R tips for beginners and advanced users there is nothing better than this:
http://pj.freefaculty.org/R/Rtips.html

or in .pdf version:
http://pj.freefaculty.org/R/Rtips.pdf

Topics include:
- exchange data between R and other programs (Excel, etc)
- create variable names on the fly
- return multiple values from a function
- scatterplot: smooth a line connecting points
- test for Normality
- multiple analysis of variance
- character encoding
- R environment in side scripts

and many more. Enjoy.