Only one instance of a given MSI's ProductCode can be installed at a time, so you can use that property in a custom action or system search (or the PRODUCT_GUID and INSTANCE_GUID variables if this is a pure InstallScript project). One common location to store this kind of thing is to use a string data in the "Uninstall" key.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.