Nothing
report_side_effects()
expect_equal(1+1,2)
Sys.setenv("foo"="bar")
expect_equal("a","b")
report_side_effects(FALSE)
Sys.setenv("foo"="baz")
expect_equal(TRUE, TRUE)
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.