<<< native [ ESubsup (ESymbol Op "\8747") (ENumber "0") (ENumber "1") , EGrouped [ ESuper (EIdentifier "\8519") (EIdentifier "x") , ESymbol Ord "\8290" , EGrouped [ ESymbol Ord "\8518" , EIdentifier "x" ] ] ] >>> tex \int_{0}^{1}{{\mathbb{e}}^{x}{\mathbb{d}x}}