<<< native
[ EText TextNormal "Inline, auto, normal line\160"
, EFraction
    NormalFrac
    (EGrouped
       [ EMathOperator "sin" , ESymbol Ord "\8289" , EIdentifier "\952" ])
    (EIdentifier "\960")
, EText
    TextNormal ", numerator and denominator should render script size."
]
>>> tex
\text{Inline,\ auto,\ normal\ line~}\frac{\sin\theta}{\pi}\text{,\ numerator\ and\ denominator\ should\ render\ script\ size.}