Nope, actually they wrote several rough drafts and a scribe wrote the actual document on parchment.
They also could erase their mistakes, though I forgot how. The document initially referred to people as "subjects". This was erased and changed to "citizens", as shown by some high tech scanning.
I believe that Henry W. Longfellow actually wrote it. Correct me if I'm wrong.
He wasn't even born then.
I'm not insisting I was right. Hence "Correct me if I'm wrong." did you correct me? I think not.