 Northern countries, of course, we want to have glass facing 2,000 for harvesting sunshine. Even here, summer can be hot. The sun can be beating in summer, so a house would easily overheat. And so besides making the big parts of the glass to the house, you want shading. And so a good idea is to have overhanging structures, what also protects the construction, make it more long lasting. And so the winter sun will easily go to the glass, but the summer sun will be shaded off at least partly. And this is something that is so simple, but still very often disrespected.