\VignetteKeywords{}, for KEYWORDS or for free-tagging?

Hi R-devel,

[Question]:

* Is there a KEYWORDS file to lookup 'keywords' to supply
the vignette command, '\VignetteKeywords{}'?

-or, is the pkg writer free to tag the vignette using any
keywords he/she chooses? i.e., free-tagging.

Thank you,

+ Elliot Kleiman
__________________________
San Diego State University
http://www.sdsu.edu/