Starting on the optional section

<p>I'm submitting a research abstract/layperson's summary as well as a blurb that puts the research in context of my interests, but I'm not sure how to start the optional section. Should I just paste everything in, or first put something like "Supplemental Research Abstract:" followed by my materials?</p>

<p>Also, I had wanted to include my Common App essay in the MIT application, in the optional section, because I think that it shows something unique about me, i.e. something that isn't already in the short answers, but is that over doing it?</p>