<<< 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."
]
>>> omml
<?xml version='1.0' ?>
<m:oMathPara>
  <m:oMathParaPr>
    <m:jc m:val="center" />
  </m:oMathParaPr>
  <m:oMath>
    <m:r>
      <m:rPr>
        <m:nor />
        <m:sty m:val="p" />
      </m:rPr>
      <m:t>Inline, auto, normal line </m:t>
    </m:r>
    <m:f>
      <m:fPr>
        <m:type m:val="bar" />
      </m:fPr>
      <m:num>
        <m:r>
          <m:rPr>
            <m:sty m:val="p" />
          </m:rPr>
          <m:t>sin</m:t>
        </m:r>
        <m:r>
          <m:rPr>
            <m:sty m:val="p" />
          </m:rPr>
          <m:t>&#8289;</m:t>
        </m:r>
        <m:r>
          <m:t>θ</m:t>
        </m:r>
      </m:num>
      <m:den>
        <m:r>
          <m:t>π</m:t>
        </m:r>
      </m:den>
    </m:f>
    <m:r>
      <m:rPr>
        <m:nor />
        <m:sty m:val="p" />
      </m:rPr>
      <m:t>, numerator and denominator should render script size.</m:t>
    </m:r>
  </m:oMath>
</m:oMathPara>