So That Up Is Up

In a world that is verSPINnert, ahem spinning, it's important to tell up from down, right from wrong, ... So too in bookbinding. That's why I, @FritzOttoBuchbinder, always put an up arrow on the end sheet indicating up, and a "V" for vorne (front). Helps prevent confusion and casing-in upsidedown. Of course, that NEVER happens to me. 🤔🙄😮‍💨