Hi everyone.
Kerbango here to share with you many years of research and development in reverse engineering "how in the heck does this game work?"

All credit to this work goes to the fine people here on https://www.simpleplanes.com, also my Mother for making me learn to read. Because I have read a lot. I mean, ALOT! most was not helpful, people asking the same questions I had and not getting answers. Few and far between, the answers were eeked out of the ether of the forums.
And this is not even close to what else is out there to help you.
This is not the greatest list, this is just a tribute to it.

Here are a few links:
The Ultimate Guide to Editing XML Using overload tutorial.
Funky trees guide. the programming language this game uses.
Rich Text. You can use rich text tags to alter the appearance and layout of your text. These tags work like HTML or XML tags, but have less strict syntax. For labels....and here on the site.....?
Markdown Formatting basically for this here website posts and comments.
Simplecheats II
HTML Color Picker
https://www.simpleplanes.com/Forums/View/1863836/pictures-into-Label-Stickers
https://www.simpleplanes.com/Forums/View/1075330/Turn-signals-and-Reverse-lights-SOLVED
https://www.simpleplanes.com/Forums/View/1470832/RESOURCE-Enhancing-Button-Switch-Labels-and-Text-Labels-using-these-Rich-Text
https://www.simpleplanes.com/a/Kx2cAD/Hover-vehicle-template
https://www.simpleplanes.com/Forums/View/1498184/CAMERA-AIMING
https://www.simpleplanes.com/Forums/View/1896019/Useful-FT-Codes-2-0