Nothing
a = b = c = d = e = f = g = 4
a <- 3; b = c = d = ey <- 4
a <- 3; b = c = d <- ey = 4
ff = 3; b = c = d = 3 ; g = 4; ge = 5
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.