What really happened that summer day in 1291 in the Altdorf square between pudgy knight Konrad von Tillendorf (still known today as Gessler) and a mower with a crossbow nicknamed Tillen or Tell? Many have wondered about this over the centuries, including the great Swiss writer Max Frisch. But that is no impediment to telling the Tell tale as no one ever has before, especially if you are lucky enough to be able to start from an exceptional basic material like the huge tapestry woven by users of La Fonte di Agno - Laboratorio protetto. As the characters begin to move time slips away and we find ourselves in Altdorf, right on that steaming summer day when a certain Tell…