Cross purposes: the unique Swiss flag

“The Swiss flag is a big plus” goes the old joke. It also has several strengths – and quirks – that go far beyond that of resembling an addition sign. The only square national flag apart from that of the Vatican City, the Swiss flag has the advantage over its near neighbour of being more versatile: no matter which side you use as a base, it will always be in the right direction. The next time someone mocks the Swiss for having a “square mentality”, you can retort with this bit of trivia. In…