About Micro 3D engine for ATMEL and STM32   The hardest part of any complex information system is to get a clear and consice understanding of what functions are available and what they do. One problem that is usual is that you have so many functions that your meny trees gets garbled and cryptic.   With a vertex engine you can easily handle say 10 icons that is one of your menu trees and use the cordinates to keep track of at what depth the icon actually is and where on the screen the icon is.   You can have a stack like a stack of coins that when you hover over it splits appart and shows up as menu buttons. When doing something else the icons will collect to a defined pattern at a specific place and you menu tree is once again inactive but showing how much that is available in that section.