[R] How to know in which package is a function

[Robert Chung]

Liaw, Andy wrote:
> To search among all CRAN (and BioC) packages, your
> best best is RSiteSearch("fcn", restrict="function").

> ?RSiteSearch
No documentation for 'RSiteSearch' in specified packages and libraries:
you could try 'help.search("RSiteSearch")'

> help.search("RSiteSearch")
No help files found with alias or concept or title matching
'RSiteSearch' using fuzzy matching.