R-beta: To open a function in R

[bensmail]

Hello again,

Since it was very efficient to ask people of r-help 
about reading a file in R from Mac, and I thank them all.
It gives me the courage to ask another question.

I get use in Splus(unix) to write a function using the
editor emacs, a small function called emacs() helped
me to open at anytime an emacs window in Splus to open
a function, change it, add something on it....
Now my problem is the Mac;-), no emacs window!!
I wrote for example an R-function called density directely
for example:
density<-function(){
a<-...
b<-...
invisible()
}

but I want to open this function again and add some changes
on it, how may I do this in the Mac?

I know, may be my question are silly but I don't want
to lose time looking through the internet since r-help 
may help :-)

Thank you again

Halima from Leiden
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