Thank you. That seems to work. Your program is great.
A note on the screens in general: It is tricky to place them with the desired alignment. A screen can facing north, south, west, east, bottom or up. North should be alignment number 8 for example. So I think your idea to use different colors should work. But what I want to say: Screens are a burden on the client site even if they are turned off. I personally create them, therefore, only by hand and when I need them. Align the screens correctly goes very quickly. Much more important for me is that you have implemented a structured cab