<<< mml ${\int }_0^1{e}^{x}dx$ >>> native [ ESubsup (ESymbol Op "\8747") (ENumber "0") (ENumber "1") , EGrouped [ ESuper (EIdentifier "\8519") (EIdentifier "x") , ESymbol Ord "\8290" , EGrouped [ ESymbol Ord "\8518" , EIdentifier "x" ] ] ]