Some people may not be aware, but IL-2 already has a custom icons feature that can be set by the server (online) or by the player (offline). I've been using custom icons in my coops for many years.
Here is a simple tutorial on how to do it:
http://www.il2-fullmissionbuilder.co...b2cef688e074ae
Also:
ECV56_Lancelot stated--->
"Maybe, just as an idea, a good option would be that you have to press a key to see the icons, and keep it pressed to keep the icons on. When you release the key the icons fade away."
IL-2 already has the 'Toggle Icon Types' command, which basically does exactly that, except it is a 4-stage toggle. The player can toggle 3 stages of icon visibility or totally disable them. That pretty much achieves what Lancelot was requesting. *If you have some sort of joystick mapping software, like CH Manager, you could easily set up a macro command that does EXACTLY what Lancelot was requesting.....
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