Derma Text Editor

I looked in search, and I know I’ve seen something like this before, but I can’t find it. I have no experience in making things in Derma, but I need a little text editor for a text file in the data folder. I drew something in paint on how I was hoping it to look like.

Can someone here make something like this for me? Thanks in advance.

You could just use this if you’re new to derma, helps a lot and you’ll be able to make what you want and it will generate the script, so you can see exactly how to do it.