[R] Howto view function's source code of an installed package

[Gundala Viswanath]

Hi,

Is there a way I can view the functions source code of  a
package I installed in my PC.

For example I downloaded the great "mixtools" package.
I want to see the source code of one of its function "normalmixEM"

Is there a way to do it? Presumably from R command prompt?

I tried to take a look at the zip file, but somehow I can't seem
to find the file on which I can find the source code. Please advice.

- Gundala Viswanath
Jakarta - Indonesia