aerial view of Borgholm Castle; however, as stated its use for attractions began in Finland, not Sweden, and the symbol is well-represented in Scandinavian artifacts that predate the current castle by centuries. The symbol later gained international recognition via computing. It is used on Apple keyboards as the symbol for the command key as well as in elementary OS as the symbol for the Super key. The looped square is used in the logos of Belgian telecommunications company Proximus and Canadian software company DistillerSR. Encoding In Unicode, it is encoded at , in the block Miscellaneous Technical. Gallery See also Bowen knot Valknut Camunian rose References External links Cross symbols Historical markers Traffic signs