[R] function code

[Luis Ridao Cruz]

R-help,

Sorry for this question (I guess it has been addressed before but 
I could not find it in the archives)
but how can I see a function code
when the following comes up:

> svymean
function (x, design, na.rm = FALSE, ...) 
{
    .svycheck(design)
    UseMethod("svymean", design)
}
<environment: namespace:survey>


Thanks in advance