[EGrouped [EText TextNormal "Inline, auto, thick line\160",EGrouped [EGrouped [EBinary "\\frac" (EGrouped [ESuper (EIdentifier "x") (ENumber "2"),ESymbol Op "+",ENumber "1"]) (EIdentifier "x")]],EText TextNormal ", the superscripted 2 should be script-script size."]]