help page for a function

Dear R People

I have a function that I wrote.  It's not part of a 
library, it's just a nice function.

However, I would like to have a "Help" page for it.
How do I go about doing that please?

Thanks so much in advance!

R version 1.5.1 for Windows.

Sincerely,
Erin
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !)  To: r-help-request at stat.math.ethz.ch
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._