Nothing
"prepanel.dice" <-
function(x,y){
xx <- ceiling(sqrt(length(x)))
yy <- ceiling( length(x)/xx )
return(list(ylim=c(-0.1,yy+0.1),xlim=c(-0.1,xx+0.1)) )
}
Any scripts or data that you put into this service are public.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.