texmath-0.13.1.2: test/writer/eqn/maction-05.test
<<< native [ ESuper (EIdentifier "x") (ENumber "2") , ESymbol Bin "\8722" , ENumber "1" , ESymbol Rel "=" , ENumber "0" ] >>> eqn x sup 2 - 1 = 0
<<< native [ ESuper (EIdentifier "x") (ENumber "2") , ESymbol Bin "\8722" , ENumber "1" , ESymbol Rel "=" , ENumber "0" ] >>> eqn x sup 2 - 1 = 0