How do I overlay icons and message boxes on my user interface?

EVE displays items on the screen in the order of the display list. Therefore, items further down in the display list will be layered on top of items further up. A shape or image displayed towards the end of the list can therefore be overlaid on top of the earlier screen contents. This is useful for adding a menu or message box over the top of the user interface. You can use the Alpha setting (COLOR_A) to give the message box partial transparency too for an improved visual effect.