A team of scientists were doing some nature-survey works at a forest-area in Germany. Suddenly they noticed, there is a cottage, probably very old.
They decided to take a visit to it, when they will get some time.
But when they reached to the cottage, it did not seem anyone lives there. discolored, places-to-places covered with lichen. The wooden cottage was broken on places. There were cobwebs, also ditchy places where snakes may easily stay.
When they reached the front side of the cottage, a shock was waiting. Just beside an window, a big, approx 3 feet X 3 feet, very rusty iron signboard was showing something what looks like a Swastika.
The team became quite frightened because they thought it could be a Nazi office or club, and there could be bombs remaining for many years. They informed about it to the security personnels.
The next day security personnels said no bombs or any other weapons found (except an ordinary cooking knife), They also found some household utensils, many books, mostly on literature (with many of them highly damaged due to rainfalls), but none of them was seemed related to Nazi political ideology. A bunch of paintbrushes found, a broken easel, some torn canvas with illegible images. In a trunk, along with some clothings and towels, miscellaneous study-objects like fountain-pens, pencils etc along with some diaries and notebooks from which it seems the owner of the cottage was an old woman who lived alone in this cottage, wrote poems, did paintings, and strongly disliked anything about war.
No, could you tell, why that signboard was used?