Nothing
args(write.table)
write.table(ddd,"ddd.txt")
write.csv(ddd,"ddd.csv")
# this system call should work on a Mac or Linux machine
system("head -20 ddd.txt ddd.csv")
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.