[tgiladi]

Oh, wow thanks!
I'm going to give it a try, it looks like it would make my life so much easier

Edit:
So I've followed the example in post #16 excatly. It works as described for showing the author notes as either a pop-up (if the column is visible in the book list) or as part of the metadata.
But I am having the same problem with inserting it into my jacket, as I did before.
The code in my template for the jacket is excatly like the example in post #16:

<div><b>{_composite_label}:</b> {_composite}</div>

But when the jacket is created, this is what the code looks like:

<div><b>composite:</b> &lt;div&gt;
&lt;p&gt;some details about the author&lt;/p&gt;&lt;/div&gt;</div>

I have only put some text into the author's note, for testing purposes. So there are no complicated tables or images that might have caused this. But I guess the template doesn't understand that data inside the composite column is supposed to be html.

Any idea how to work around that?