If so, you can make the notebox value in a variable set as strings. Then access those via the window where you want them displayed. You can always go with checking the beginning tag, and then the ending tag. Any value after those tags would be the string description you want.
Ex:
<itemDescription>
The silver sword maybe an ordinary battle weapon, but in the face of a vampire, any silver made weapon induces deadlier strikes.
</itemDescription>
In this, all you have to do is detect the tag of <itemDescription> and </itemDescription>, so any value inside those close tags would be placed in a new variable where you would of course draw the text in on the custom window.