choose.test

<<< omml
<?xml version="1.0" encoding="UTF-8"?>
<m:oMathPara>
  <m:oMathParaPr>
    <m:jc m:val="center" />
  </m:oMathParaPr>
  <m:oMath>
    <m:d>
      <m:dPr>
        <m:begChr m:val="(" />
        <m:endChr m:val=")" />
        <m:grow />
      </m:dPr>
      <m:e>
        <m:f>
          <m:fPr>
            <m:type m:val="noBar" />
          </m:fPr>
          <m:num>
            <m:r>
              <m:rPr>
                <m:sty m:val="p" />
              </m:rPr>
              <m:t>a</m:t>
            </m:r>
          </m:num>
          <m:den>
            <m:d>
              <m:dPr>
                <m:begChr m:val="{" />
                <m:endChr m:val="}" />
                <m:grow />
              </m:dPr>
              <m:e>
                <m:f>
                  <m:fPr>
                    <m:type m:val="noBar" />
                  </m:fPr>
                  <m:num>
                    <m:r>
                      <m:rPr>
                        <m:sty m:val="p" />
                      </m:rPr>
                      <m:t>b</m:t>
                    </m:r>
                  </m:num>
                  <m:den>
                    <m:r>
                      <m:rPr>
                        <m:sty m:val="p" />
                      </m:rPr>
                      <m:t>c</m:t>
                    </m:r>
                    <m:r>
                      <m:rPr>
                        <m:sty m:val="p" />
                      </m:rPr>
                      <m:t>+</m:t>
                    </m:r>
                    <m:r>
                      <m:rPr>
                        <m:sty m:val="p" />
                      </m:rPr>
                      <m:t>2</m:t>
                    </m:r>
                  </m:den>
                </m:f>
              </m:e>
            </m:d>
          </m:den>
        </m:f>
      </m:e>
    </m:d>
  </m:oMath>
</m:oMathPara>

>>> native
[ EDelimited
    "("
    ")"
    [ Right
        (EFraction
           NoLineFrac
           (EIdentifier "a")
           (EDelimited
              "{"
              "}"
              [ Right
                  (EFraction
                     NoLineFrac
                     (EIdentifier "b")
                     (EGrouped [ EIdentifier "c" , ESymbol Bin "+" , ENumber "2" ]))
              ]))
    ]
]