Nothing
"is.inf" <- function(x) is.infinite(x)
"is.number" <- function(x) (is.numeric(x) || is.complex(x)) & !is.na(x)
"is.orderable" <- function(x) !is.na(x)
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.