Donut Team has released an internal tool used to figure out information about unknown chunk data. It's not useful to mod creators unless you can decipher the data; however if you would like to try and figure out more about the innerworkings of some of the unknown data, you can download it here: http://donutteam.com/mod/45/
--
Frequently Asked Questions
I lied, no one asked. But someone might.What does this tool do?
Showcases data that is inside a Pure3D file in a way that shows the differences in each chunk.
Can I edit said data?
Not with this program, you can use Lucas' Pure3D Editor 4 to edit data.
Why are you releasing it?
Why not? It could be helpful to someone, however most likely won't as even we rarely use it.