[EGrouped [EText TextNormal "Displayed nested fractions are normal size at the first level,\160",EGrouped [EBinary "\\frac" (ESuper (ENumber "1") (EUnary "\\sqrt" (EGrouped [ENumber "6"]))) (EGrouped [EUnary "\\sqrt" (EGrouped [ENumber "2"]),ESymbol Op "+",EBinary "\\frac" (ENumber "1") (EGrouped [EUnary "\\sqrt" (EGrouped [ENumber "3"]),ESymbol Op "+",EBinary "\\frac" (ENumber "1") (EGrouped [EUnary "\\sqrt" (EGrouped [ENumber "4"]),ESymbol Op "+",EBinary "\\frac" (ENumber "1") (EGrouped [EUnary "\\sqrt" (EGrouped [ENumber "5"]),ESymbol Op "+",EBinary "\\frac" (ENumber "1") (EGrouped [EUnary "\\sqrt" (EGrouped [ENumber "6"]),ESymbol Op "+",EIdentifier "\8230"])])])])])],EText TextNormal "\160script size at second level, and script-script size at all more nested levels."]]