Due to lack of global functions, we're adding more and more global variables. In some  cases after a while we find a way to do it differently, but the global variables are still there. Usually we quite afraid to delete the variable because we're not sure if the variable is not in use somewhere in code. So, this code scans scenes and virtual devices and finds where the variable is in use. Scenes displayed (blue color) by name and scene ID. Virtual devices displayed (wheat color) by