Nothing
library("ggplot2")
ggplot(mtcars, aes(x = wt, y = mpg, colour = factor(gear))) +
geom_point() +
ggtitle("Cars") +
theme_excel_new() +
scale_colour_excel_new()
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.