Built in Notebook

What I'm looking to do is to have the user be able to have a notebook built into the story.

At certain points along the story, they will take notes based on what is the screen.  However, I also want them to be able to edit the notes that they previously entered.

I tried using a TextEntry box, and using %TextEntry% inside of it, but it looks like you are unable to display variables within a TextEntry box. 

Any ideas?