Larian Studios Forums Divinity: Original Sin 2 - The Modding Dungeon Divinity - Original Sin 2 - Modding Scripting Understanding Query and Proc.

I have read this thread 3 times, and I am still no closer to understanding how Proc works. Can someone post a screen cap or a reference to some specific code and explain how that piece works? I simply have no idea how to use a proc function.