cmpMathSymbols["9"] := "{u+221f}" ; (∟) right angle
cmpMathSymbols["0"] := "{u+2221}" ; (∡) measured angle
cmpMathSymbols["+"] := "{u+2295}" ; (⊕) circled plus
cmpMathSymbols["-"] := "{u+2296}" ; (⊖) circled minus
cmpMathSymbols["9"] := "{u+221f}" ; (∟) right angle
cmpMathSymbols["0"] := "{u+2221}" ; (∡) measured angle
cmpMathSymbols["+"] := "{u+2295}" ; (⊕) circled plus
cmpMathSymbols["-"] := "{u+2296}" ; (⊖) circled minus