attaching addendum because of space constraints?

skatherine018

I'm filling out Harvard's application and it has a section in which you have to describe a "significant piece of writing under the direct supervision of a faculty member or employer". I'm a PhD student, so I have a ton of these, but I'm only allowed 300 characters. Is it appropriate to attach an addendum, or do I just say "see résumé"?

s324g23423

You're supposed to describe it, so 300 characters should be sufficient. In other words, don't do either of the above.