[Rd] Citation for R

[Gordon Smyth]

>Note also that R does have a User Guide, i.e., while there is plenty of 
>excellent documentation,
>there is no single document which is a guide to the whole project.

Oops, I meant to write "R does not have a User Guide".

Just to explain this further, the citation() function asks me to cite a 
"Manual" with the title "R: A language and environment for statistical 
computing". Although R comes with excellent documentation, including at 
least 6 manuals on different aspects of the software, no manual or document 
with that title actually exists, as far as I know.

Gordon