Well, it's written in small italic gray at the top of the page. To make it clearer, it could be written "Compiled javascript" on the top right of each compiled

Well, it's written in small italic gray at the top of the page. To make it clearer, it could be written "Compiled javascript" on the top right of each compiled javascript code. Or, maybe instead of a left and right rectangle, there could be a kind of arrow to inform that the left side gets automatically changed into the right side instead of showing an equivalence between the two.