R-beta: density function and others

[bensmail]

hello,

I have been using R for few months now, it seems very
helpful even on Macintosh ;-), but there are some functions
I don't find.
For example, I am ploting some histograms and I would
like to put over the hist, the curve of the distribution of my data.
If my memory is right, in Splus it could be done
by using the function "density", I looked at R manual and find
the function "density" but it doesn't
exist when I run R, the same thing happens for many function
like "library".
Any help?.... Thank you

Halima from Leiden
Holland
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