I don't know anything about this stuff.
Looked at it off and on for a couple of days thinking it should be straight forward.
I had no success looking at things in IE with my older/slower computer but once I opened the website in FireFox and used its F12 inspector it was just a matter of using the element picker and watching as I typed in that textarea.
From there did a search for how to write to a <div which got me to the page in the link.

Pleased I could help and learned something along the way.