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  <para xml:id="p1">
    <p>Equation with split; Ampersand before relation</p>
    <equation xml:id="Ch0.E1">
      <tags>
        <tag>(1)</tag>
        <tag role="refnum">1</tag>
      </tags>
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              <XMApp>
                <XMRef idref="Ch0.E1.m1.4"/>
                <XMRef idref="Ch0.E1.m1.3"/>
                <XMRef idref="Ch0.E1.m1.5"/>
              </XMApp>
            </XMApp>
            <XMArray colsep="0pt" name="aligned">
              <XMRow>
                <XMCell align="right">
                  <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E1.m1.1">C</XMTok>
                </XMCell>
                <XMCell align="left">
                  <XMApp>
                    <XMTok meaning="equals" role="RELOP" xml:id="Ch0.E1.m1.2">=</XMTok>
                    <XMTok meaning="absent"/>
                    <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E1.m1.3">D</XMTok>
                  </XMApp>
                </XMCell>
              </XMRow>
              <XMRow>
                <XMCell/>
                <XMCell align="left">
                  <XMApp>
                    <XMTok meaning="plus" role="ADDOP" xml:id="Ch0.E1.m1.4">+</XMTok>
                    <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E1.m1.5">E</XMTok>
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                </XMCell>
              </XMRow>
            </XMArray>
          </XMDual>
        </XMath>
      </Math>
    </equation>
    <p>or after</p>
    <equation xml:id="Ch0.E2">
      <tags>
        <tag>(2)</tag>
        <tag role="refnum">2</tag>
      </tags>
      <Math mode="display" tex="\begin{split}\displaystyle C=&amp;\displaystyle D\\&#10;&amp;\displaystyle{}+E\end{split}" text="C = D + E" xml:id="Ch0.E2.m1">
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          <XMDual>
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                <XMRef idref="Ch0.E2.m1.4"/>
                <XMRef idref="Ch0.E2.m1.3"/>
                <XMRef idref="Ch0.E2.m1.5"/>
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            </XMApp>
            <XMArray colsep="0pt" name="aligned">
              <XMRow>
                <XMCell align="right">
                  <XMApp>
                    <XMTok meaning="equals" role="RELOP" xml:id="Ch0.E2.m1.2">=</XMTok>
                    <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E2.m1.1">C</XMTok>
                    <XMTok meaning="absent"/>
                  </XMApp>
                </XMCell>
                <XMCell align="left">
                  <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E2.m1.3">D</XMTok>
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              </XMRow>
              <XMRow>
                <XMCell/>
                <XMCell align="left">
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                    <XMTok meaning="plus" role="ADDOP" xml:id="Ch0.E2.m1.4">+</XMTok>
                    <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E2.m1.5">E</XMTok>
                  </XMApp>
                </XMCell>
              </XMRow>
            </XMArray>
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        </XMath>
      </Math>
    </equation>
  </para>
  <para xml:id="p2">
    <p>Gather with split</p>
    <equationgroup class="ltx_eqn_gather" xml:id="Ch0.S0.EGx1">
      <equation xml:id="Ch0.E3">
        <tags>
          <tag>(3)</tag>
          <tag role="refnum">3</tag>
        </tags>
        <Math mode="display" tex="\displaystyle A=B" text="A = B" xml:id="Ch0.E3.m1">
          <XMath>
            <XMApp>
              <XMTok meaning="equals" role="RELOP">=</XMTok>
              <XMTok font="italic" role="UNKNOWN">A</XMTok>
              <XMTok font="italic" role="UNKNOWN">B</XMTok>
            </XMApp>
          </XMath>
        </Math>
      </equation>
      <equation xml:id="Ch0.E4">
        <tags>
          <tag>(4)</tag>
          <tag role="refnum">4</tag>
        </tags>
        <Math mode="display" tex="\displaystyle\begin{split}\displaystyle C&amp;\displaystyle=D\\&#10;&amp;\displaystyle{}+E\end{split}" text="C = D + E" xml:id="Ch0.E4.m1">
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              <XMApp>
                <XMRef idref="Ch0.E4.m1.2"/>
                <XMRef idref="Ch0.E4.m1.1"/>
                <XMApp>
                  <XMRef idref="Ch0.E4.m1.4"/>
                  <XMRef idref="Ch0.E4.m1.3"/>
                  <XMRef idref="Ch0.E4.m1.5"/>
                </XMApp>
              </XMApp>
              <XMArray colsep="0pt" name="aligned">
                <XMRow>
                  <XMCell align="right">
                    <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E4.m1.1">C</XMTok>
                  </XMCell>
                  <XMCell align="left">
                    <XMApp>
                      <XMTok meaning="equals" role="RELOP" xml:id="Ch0.E4.m1.2">=</XMTok>
                      <XMTok meaning="absent"/>
                      <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E4.m1.3">D</XMTok>
                    </XMApp>
                  </XMCell>
                </XMRow>
                <XMRow>
                  <XMCell/>
                  <XMCell align="left">
                    <XMApp>
                      <XMTok meaning="plus" role="ADDOP" xml:id="Ch0.E4.m1.4">+</XMTok>
                      <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E4.m1.5">E</XMTok>
                    </XMApp>
                  </XMCell>
                </XMRow>
              </XMArray>
            </XMDual>
          </XMath>
        </Math>
      </equation>
      <equation xml:id="Ch0.E5">
        <tags>
          <tag>(5)</tag>
          <tag role="refnum">5</tag>
        </tags>
        <Math mode="display" tex="\displaystyle F=G" text="F = G" xml:id="Ch0.E5.m1">
          <XMath>
            <XMApp>
              <XMTok meaning="equals" role="RELOP">=</XMTok>
              <XMTok font="italic" role="UNKNOWN">F</XMTok>
              <XMTok font="italic" role="UNKNOWN">G</XMTok>
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          </XMath>
        </Math>
      </equation>
    </equationgroup>
  </para>
  <para xml:id="p3">
    <p>Align with split.
Notice that the split acts like a column pair in the align.</p>
    <equationgroup class="ltx_eqn_align" xml:id="Ch0.S0.EGx2">
      <equation xml:id="Ch0.E6">
        <tags>
          <tag>(6)</tag>
          <tag role="refnum">6</tag>
        </tags>
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              <XMApp>
                <XMTok meaning="equals" role="RELOP">=</XMTok>
                <XMTok font="italic" role="UNKNOWN">A</XMTok>
                <XMTok font="italic" role="UNKNOWN">B</XMTok>
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            </XMath>
          </Math>
          <MathBranch>
            <td align="right"><Math mode="inline" tex="\displaystyle A" text="A" xml:id="Ch0.E6.m1">
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                  <XMTok font="italic" role="UNKNOWN">A</XMTok>
                </XMath>
              </Math></td>
            <td align="left"><Math mode="inline" tex="\displaystyle=B" text="absent = B" xml:id="Ch0.E6.m2">
                <XMath>
                  <XMApp>
                    <XMTok meaning="equals" role="RELOP">=</XMTok>
                    <XMTok meaning="absent"/>
                    <XMTok font="italic" role="UNKNOWN">B</XMTok>
                  </XMApp>
                </XMath>
              </Math></td>
          </MathBranch>
        </MathFork>
      </equation>
      <equation xml:id="Ch0.E7">
        <tags>
          <tag>(7)</tag>
          <tag role="refnum">7</tag>
        </tags>
        <MathFork>
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              <XMDual>
                <XMApp>
                  <XMRef idref="Ch0.E7.m1.2.mf"/>
                  <XMRef idref="Ch0.E7.m1.1.mf"/>
                  <XMApp>
                    <XMRef idref="Ch0.E7.m1.4.mf"/>
                    <XMRef idref="Ch0.E7.m1.3.mf"/>
                    <XMRef idref="Ch0.E7.m1.5.mf"/>
                  </XMApp>
                </XMApp>
                <XMArray colsep="0pt" name="aligned">
                  <XMRow>
                    <XMCell align="right">
                      <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E7.m1.1.mf">C</XMTok>
                    </XMCell>
                    <XMCell align="left">
                      <XMApp>
                        <XMTok meaning="equals" role="RELOP" xml:id="Ch0.E7.m1.2.mf">=</XMTok>
                        <XMTok meaning="absent"/>
                        <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E7.m1.3.mf">D</XMTok>
                      </XMApp>
                    </XMCell>
                  </XMRow>
                  <XMRow>
                    <XMCell/>
                    <XMCell align="left">
                      <XMApp>
                        <XMTok meaning="plus" role="ADDOP" xml:id="Ch0.E7.m1.4.mf">+</XMTok>
                        <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E7.m1.5.mf">E</XMTok>
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                    </XMCell>
                  </XMRow>
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            </XMath>
          </Math>
          <MathBranch>
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                  <XMDual>
                    <XMApp>
                      <XMRef idref="Ch0.E7.m1.2"/>
                      <XMRef idref="Ch0.E7.m1.1"/>
                      <XMApp>
                        <XMRef idref="Ch0.E7.m1.4"/>
                        <XMRef idref="Ch0.E7.m1.3"/>
                        <XMRef idref="Ch0.E7.m1.5"/>
                      </XMApp>
                    </XMApp>
                    <XMArray colsep="0pt" name="aligned">
                      <XMRow>
                        <XMCell align="right">
                          <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E7.m1.1">C</XMTok>
                        </XMCell>
                        <XMCell align="left">
                          <XMApp>
                            <XMTok meaning="equals" role="RELOP" xml:id="Ch0.E7.m1.2">=</XMTok>
                            <XMTok meaning="absent"/>
                            <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E7.m1.3">D</XMTok>
                          </XMApp>
                        </XMCell>
                      </XMRow>
                      <XMRow>
                        <XMCell/>
                        <XMCell align="left">
                          <XMApp>
                            <XMTok meaning="plus" role="ADDOP" xml:id="Ch0.E7.m1.4">+</XMTok>
                            <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E7.m1.5">E</XMTok>
                          </XMApp>
                        </XMCell>
                      </XMRow>
                    </XMArray>
                  </XMDual>
                </XMath>
              </Math></td>
          </MathBranch>
        </MathFork>
      </equation>
      <equation xml:id="Ch0.E8">
        <tags>
          <tag>(8)</tag>
          <tag role="refnum">8</tag>
        </tags>
        <MathFork>
          <Math tex="\displaystyle F=G" text="F = G" xml:id="Ch0.E8.m3">
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              <XMApp>
                <XMTok meaning="equals" role="RELOP">=</XMTok>
                <XMTok font="italic" role="UNKNOWN">F</XMTok>
                <XMTok font="italic" role="UNKNOWN">G</XMTok>
              </XMApp>
            </XMath>
          </Math>
          <MathBranch>
            <td align="right"><Math mode="inline" tex="\displaystyle F" text="F" xml:id="Ch0.E8.m1">
                <XMath>
                  <XMTok font="italic" role="UNKNOWN">F</XMTok>
                </XMath>
              </Math></td>
            <td align="left"><Math mode="inline" tex="\displaystyle=G" text="absent = G" xml:id="Ch0.E8.m2">
                <XMath>
                  <XMApp>
                    <XMTok meaning="equals" role="RELOP">=</XMTok>
                    <XMTok meaning="absent"/>
                    <XMTok font="italic" role="UNKNOWN">G</XMTok>
                  </XMApp>
                </XMath>
              </Math></td>
          </MathBranch>
        </MathFork>
      </equation>
      <equation xml:id="Ch0.E9">
        <tags>
          <tag>(9)</tag>
          <tag role="refnum">9</tag>
        </tags>
        <MathFork>
          <Math tex="\displaystyle H=I" text="H = I" xml:id="Ch0.E9.m3">
            <XMath>
              <XMApp>
                <XMTok meaning="equals" role="RELOP">=</XMTok>
                <XMTok font="italic" role="UNKNOWN">H</XMTok>
                <XMTok font="italic" role="UNKNOWN">I</XMTok>
              </XMApp>
            </XMath>
          </Math>
          <MathBranch>
            <td align="right"><Math mode="inline" tex="\displaystyle H" text="H" xml:id="Ch0.E9.m1">
                <XMath>
                  <XMTok font="italic" role="UNKNOWN">H</XMTok>
                </XMath>
              </Math></td>
            <td align="left"><Math mode="inline" tex="\displaystyle=I" text="absent = I" xml:id="Ch0.E9.m2">
                <XMath>
                  <XMApp>
                    <XMTok meaning="equals" role="RELOP">=</XMTok>
                    <XMTok meaning="absent"/>
                    <XMTok font="italic" role="UNKNOWN">I</XMTok>
                  </XMApp>
                </XMath>
              </Math></td>
          </MathBranch>
        </MathFork>
      </equation>
    </equationgroup>
  </para>
  <para xml:id="p4">
    <p>2-Column align, with missing columns</p>
    <equationgroup class="ltx_eqn_align" xml:id="Ch0.S0.EGx3">
      <equation xml:id="Ch0.E10">
        <tags>
          <tag>(10)</tag>
          <tag role="refnum">10</tag>
        </tags>
        <MathFork>
          <Math tex="\displaystyle A=B" text="A = B" xml:id="Ch0.E10.m5">
            <XMath>
              <XMApp>
                <XMTok meaning="equals" role="RELOP">=</XMTok>
                <XMTok font="italic" role="UNKNOWN">A</XMTok>
                <XMTok font="italic" role="UNKNOWN">B</XMTok>
              </XMApp>
            </XMath>
          </Math>
          <MathBranch>
            <td align="right"><Math mode="inline" tex="\displaystyle A" text="A" xml:id="Ch0.E10.m1">
                <XMath>
                  <XMTok font="italic" role="UNKNOWN">A</XMTok>
                </XMath>
              </Math></td>
            <td align="left"><Math mode="inline" tex="\displaystyle=B" text="absent = B" xml:id="Ch0.E10.m2">
                <XMath>
                  <XMApp>
                    <XMTok meaning="equals" role="RELOP">=</XMTok>
                    <XMTok meaning="absent"/>
                    <XMTok font="italic" role="UNKNOWN">B</XMTok>
                  </XMApp>
                </XMath>
              </Math></td>
          </MathBranch>
        </MathFork>
        <MathFork>
          <Math tex="\displaystyle C=D" text="C = D" xml:id="Ch0.E10.m6">
            <XMath>
              <XMApp>
                <XMTok meaning="equals" role="RELOP">=</XMTok>
                <XMTok font="italic" role="UNKNOWN">C</XMTok>
                <XMTok font="italic" role="UNKNOWN">D</XMTok>
              </XMApp>
            </XMath>
          </Math>
          <MathBranch>
            <td align="right"><Math mode="inline" tex="\displaystyle C" text="C" xml:id="Ch0.E10.m3">
                <XMath>
                  <XMTok font="italic" role="UNKNOWN">C</XMTok>
                </XMath>
              </Math></td>
            <td align="left"><Math mode="inline" tex="\displaystyle=D" text="absent = D" xml:id="Ch0.E10.m4">
                <XMath>
                  <XMApp>
                    <XMTok meaning="equals" role="RELOP">=</XMTok>
                    <XMTok meaning="absent"/>
                    <XMTok font="italic" role="UNKNOWN">D</XMTok>
                  </XMApp>
                </XMath>
              </Math></td>
          </MathBranch>
        </MathFork>
      </equation>
      <equation xml:id="Ch0.E11">
        <tags>
          <tag>(11)</tag>
          <tag role="refnum">11</tag>
        </tags>
        <MathFork>
          <Math tex="\displaystyle E=F" text="E = F" xml:id="Ch0.E11.m3">
            <XMath>
              <XMApp>
                <XMTok meaning="equals" role="RELOP">=</XMTok>
                <XMTok font="italic" role="UNKNOWN">E</XMTok>
                <XMTok font="italic" role="UNKNOWN">F</XMTok>
              </XMApp>
            </XMath>
          </Math>
          <MathBranch>
            <td align="right"><Math mode="inline" tex="\displaystyle E" text="E" xml:id="Ch0.E11.m1">
                <XMath>
                  <XMTok font="italic" role="UNKNOWN">E</XMTok>
                </XMath>
              </Math></td>
            <td align="left"><Math mode="inline" tex="\displaystyle=F" text="absent = F" xml:id="Ch0.E11.m2">
                <XMath>
                  <XMApp>
                    <XMTok meaning="equals" role="RELOP">=</XMTok>
                    <XMTok meaning="absent"/>
                    <XMTok font="italic" role="UNKNOWN">F</XMTok>
                  </XMApp>
                </XMath>
              </Math></td>
          </MathBranch>
        </MathFork>
      </equation>
      <equation xml:id="Ch0.E12">
        <tags>
          <tag>(12)</tag>
          <tag role="refnum">12</tag>
        </tags>
        <MathFork>
          <Math tex="\displaystyle H=I" text="H = I" xml:id="Ch0.E12.m5">
            <XMath>
              <XMApp>
                <XMTok meaning="equals" role="RELOP">=</XMTok>
                <XMTok font="italic" role="UNKNOWN">H</XMTok>
                <XMTok font="italic" role="UNKNOWN">I</XMTok>
              </XMApp>
            </XMath>
          </Math>
          <MathBranch>
            <td align="right"><Math mode="inline" tex="\displaystyle H" text="H" xml:id="Ch0.E12.m1">
                <XMath>
                  <XMTok font="italic" role="UNKNOWN">H</XMTok>
                </XMath>
              </Math></td>
            <td align="left"><Math mode="inline" tex="\displaystyle=I" text="absent = I" xml:id="Ch0.E12.m2">
                <XMath>
                  <XMApp>
                    <XMTok meaning="equals" role="RELOP">=</XMTok>
                    <XMTok meaning="absent"/>
                    <XMTok font="italic" role="UNKNOWN">I</XMTok>
                  </XMApp>
                </XMath>
              </Math></td>
          </MathBranch>
        </MathFork>
        <MathFork>
          <Math tex="\displaystyle J=K" text="J = K" xml:id="Ch0.E12.m6">
            <XMath>
              <XMApp>
                <XMTok meaning="equals" role="RELOP">=</XMTok>
                <XMTok font="italic" role="UNKNOWN">J</XMTok>
                <XMTok font="italic" role="UNKNOWN">K</XMTok>
              </XMApp>
            </XMath>
          </Math>
          <MathBranch>
            <td align="right"><Math mode="inline" tex="\displaystyle J" text="J" xml:id="Ch0.E12.m3">
                <XMath>
                  <XMTok font="italic" role="UNKNOWN">J</XMTok>
                </XMath>
              </Math></td>
            <td align="left"><Math mode="inline" tex="\displaystyle=K" text="absent = K" xml:id="Ch0.E12.m4">
                <XMath>
                  <XMApp>
                    <XMTok meaning="equals" role="RELOP">=</XMTok>
                    <XMTok meaning="absent"/>
                    <XMTok font="italic" role="UNKNOWN">K</XMTok>
                  </XMApp>
                </XMath>
              </Math></td>
          </MathBranch>
        </MathFork>
      </equation>
    </equationgroup>
  </para>
  <para xml:id="p5">
    <p>2-Column align with split;
Note that you should omit double slash from last line of split!</p>
    <equationgroup class="ltx_eqn_align" xml:id="Ch0.S0.EGx4">
      <equation xml:id="Ch0.E13">
        <tags>
          <tag>(13)</tag>
          <tag role="refnum">13</tag>
        </tags>
        <MathFork>
          <Math tex="\displaystyle A=B" text="A = B" xml:id="Ch0.E13.m5">
            <XMath>
              <XMApp>
                <XMTok meaning="equals" role="RELOP">=</XMTok>
                <XMTok font="italic" role="UNKNOWN">A</XMTok>
                <XMTok font="italic" role="UNKNOWN">B</XMTok>
              </XMApp>
            </XMath>
          </Math>
          <MathBranch>
            <td align="right"><Math mode="inline" tex="\displaystyle A" text="A" xml:id="Ch0.E13.m1">
                <XMath>
                  <XMTok font="italic" role="UNKNOWN">A</XMTok>
                </XMath>
              </Math></td>
            <td align="left"><Math mode="inline" tex="\displaystyle=B" text="absent = B" xml:id="Ch0.E13.m2">
                <XMath>
                  <XMApp>
                    <XMTok meaning="equals" role="RELOP">=</XMTok>
                    <XMTok meaning="absent"/>
                    <XMTok font="italic" role="UNKNOWN">B</XMTok>
                  </XMApp>
                </XMath>
              </Math></td>
          </MathBranch>
        </MathFork>
        <MathFork>
          <Math tex="\displaystyle C=D" text="C = D" xml:id="Ch0.E13.m6">
            <XMath>
              <XMApp>
                <XMTok meaning="equals" role="RELOP">=</XMTok>
                <XMTok font="italic" role="UNKNOWN">C</XMTok>
                <XMTok font="italic" role="UNKNOWN">D</XMTok>
              </XMApp>
            </XMath>
          </Math>
          <MathBranch>
            <td align="right"><Math mode="inline" tex="\displaystyle C" text="C" xml:id="Ch0.E13.m3">
                <XMath>
                  <XMTok font="italic" role="UNKNOWN">C</XMTok>
                </XMath>
              </Math></td>
            <td align="left"><Math mode="inline" tex="\displaystyle=D" text="absent = D" xml:id="Ch0.E13.m4">
                <XMath>
                  <XMApp>
                    <XMTok meaning="equals" role="RELOP">=</XMTok>
                    <XMTok meaning="absent"/>
                    <XMTok font="italic" role="UNKNOWN">D</XMTok>
                  </XMApp>
                </XMath>
              </Math></td>
          </MathBranch>
        </MathFork>
      </equation>
      <equation xml:id="Ch0.E14">
        <tags>
          <tag>(14)</tag>
          <tag role="refnum">14</tag>
        </tags>
        <MathFork>
          <Math tex="\displaystyle\begin{split}\displaystyle E&amp;\displaystyle=F\\&#10;&amp;\displaystyle{}+G\end{split}" text="E = F + G" xml:id="Ch0.E14.m2">
            <XMath>
              <XMDual>
                <XMApp>
                  <XMRef idref="Ch0.E14.m1.2.mf"/>
                  <XMRef idref="Ch0.E14.m1.1.mf"/>
                  <XMApp>
                    <XMRef idref="Ch0.E14.m1.4.mf"/>
                    <XMRef idref="Ch0.E14.m1.3.mf"/>
                    <XMRef idref="Ch0.E14.m1.5.mf"/>
                  </XMApp>
                </XMApp>
                <XMArray colsep="0pt" name="aligned">
                  <XMRow>
                    <XMCell align="right">
                      <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E14.m1.1.mf">E</XMTok>
                    </XMCell>
                    <XMCell align="left">
                      <XMApp>
                        <XMTok meaning="equals" role="RELOP" xml:id="Ch0.E14.m1.2.mf">=</XMTok>
                        <XMTok meaning="absent"/>
                        <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E14.m1.3.mf">F</XMTok>
                      </XMApp>
                    </XMCell>
                  </XMRow>
                  <XMRow>
                    <XMCell/>
                    <XMCell align="left">
                      <XMApp>
                        <XMTok meaning="plus" role="ADDOP" xml:id="Ch0.E14.m1.4.mf">+</XMTok>
                        <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E14.m1.5.mf">G</XMTok>
                      </XMApp>
                    </XMCell>
                  </XMRow>
                </XMArray>
              </XMDual>
            </XMath>
          </Math>
          <MathBranch>
            <td align="center" colspan="2"><Math mode="inline" tex="\displaystyle\begin{split}\displaystyle E&amp;\displaystyle=F\\&#10;&amp;\displaystyle{}+G\end{split}" text="E = F + G" xml:id="Ch0.E14.m1">
                <XMath>
                  <XMDual>
                    <XMApp>
                      <XMRef idref="Ch0.E14.m1.2"/>
                      <XMRef idref="Ch0.E14.m1.1"/>
                      <XMApp>
                        <XMRef idref="Ch0.E14.m1.4"/>
                        <XMRef idref="Ch0.E14.m1.3"/>
                        <XMRef idref="Ch0.E14.m1.5"/>
                      </XMApp>
                    </XMApp>
                    <XMArray colsep="0pt" name="aligned">
                      <XMRow>
                        <XMCell align="right">
                          <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E14.m1.1">E</XMTok>
                        </XMCell>
                        <XMCell align="left">
                          <XMApp>
                            <XMTok meaning="equals" role="RELOP" xml:id="Ch0.E14.m1.2">=</XMTok>
                            <XMTok meaning="absent"/>
                            <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E14.m1.3">F</XMTok>
                          </XMApp>
                        </XMCell>
                      </XMRow>
                      <XMRow>
                        <XMCell/>
                        <XMCell align="left">
                          <XMApp>
                            <XMTok meaning="plus" role="ADDOP" xml:id="Ch0.E14.m1.4">+</XMTok>
                            <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E14.m1.5">G</XMTok>
                          </XMApp>
                        </XMCell>
                      </XMRow>
                    </XMArray>
                  </XMDual>
                </XMath>
              </Math></td>
          </MathBranch>
        </MathFork>
      </equation>
      <equation xml:id="Ch0.E15">
        <tags>
          <tag>(15)</tag>
          <tag role="refnum">15</tag>
        </tags>
        <MathFork>
          <Math tex="\displaystyle H=I" text="H = I" xml:id="Ch0.E15.m5">
            <XMath>
              <XMApp>
                <XMTok meaning="equals" role="RELOP">=</XMTok>
                <XMTok font="italic" role="UNKNOWN">H</XMTok>
                <XMTok font="italic" role="UNKNOWN">I</XMTok>
              </XMApp>
            </XMath>
          </Math>
          <MathBranch>
            <td align="right"><Math mode="inline" tex="\displaystyle H" text="H" xml:id="Ch0.E15.m1">
                <XMath>
                  <XMTok font="italic" role="UNKNOWN">H</XMTok>
                </XMath>
              </Math></td>
            <td align="left"><Math mode="inline" tex="\displaystyle=I" text="absent = I" xml:id="Ch0.E15.m2">
                <XMath>
                  <XMApp>
                    <XMTok meaning="equals" role="RELOP">=</XMTok>
                    <XMTok meaning="absent"/>
                    <XMTok font="italic" role="UNKNOWN">I</XMTok>
                  </XMApp>
                </XMath>
              </Math></td>
          </MathBranch>
        </MathFork>
        <MathFork>
          <Math tex="\displaystyle J=K" text="J = K" xml:id="Ch0.E15.m6">
            <XMath>
              <XMApp>
                <XMTok meaning="equals" role="RELOP">=</XMTok>
                <XMTok font="italic" role="UNKNOWN">J</XMTok>
                <XMTok font="italic" role="UNKNOWN">K</XMTok>
              </XMApp>
            </XMath>
          </Math>
          <MathBranch>
            <td align="right"><Math mode="inline" tex="\displaystyle J" text="J" xml:id="Ch0.E15.m3">
                <XMath>
                  <XMTok font="italic" role="UNKNOWN">J</XMTok>
                </XMath>
              </Math></td>
            <td align="left"><Math mode="inline" tex="\displaystyle=K" text="absent = K" xml:id="Ch0.E15.m4">
                <XMath>
                  <XMApp>
                    <XMTok meaning="equals" role="RELOP">=</XMTok>
                    <XMTok meaning="absent"/>
                    <XMTok font="italic" role="UNKNOWN">K</XMTok>
                  </XMApp>
                </XMath>
              </Math></td>
          </MathBranch>
        </MathFork>
      </equation>
    </equationgroup>
  </para>
  <para xml:id="p6">
    <equationgroup class="ltx_eqn_align" xml:id="Ch0.S0.EGx5">
      <equation xml:id="Ch0.E16">
        <tags>
          <tag>(16)</tag>
          <tag role="refnum">16</tag>
        </tags>
        <MathFork>
          <Math tex="\displaystyle A=B" text="A = B" xml:id="Ch0.E16.m5">
            <XMath>
              <XMApp>
                <XMTok meaning="equals" role="RELOP">=</XMTok>
                <XMTok font="italic" role="UNKNOWN">A</XMTok>
                <XMTok font="italic" role="UNKNOWN">B</XMTok>
              </XMApp>
            </XMath>
          </Math>
          <MathBranch>
            <td align="right"><Math mode="inline" tex="\displaystyle A" text="A" xml:id="Ch0.E16.m1">
                <XMath>
                  <XMTok font="italic" role="UNKNOWN">A</XMTok>
                </XMath>
              </Math></td>
            <td align="left"><Math mode="inline" tex="\displaystyle=B" text="absent = B" xml:id="Ch0.E16.m2">
                <XMath>
                  <XMApp>
                    <XMTok meaning="equals" role="RELOP">=</XMTok>
                    <XMTok meaning="absent"/>
                    <XMTok font="italic" role="UNKNOWN">B</XMTok>
                  </XMApp>
                </XMath>
              </Math></td>
          </MathBranch>
        </MathFork>
        <MathFork>
          <Math tex="\displaystyle C=D" text="C = D" xml:id="Ch0.E16.m6">
            <XMath>
              <XMApp>
                <XMTok meaning="equals" role="RELOP">=</XMTok>
                <XMTok font="italic" role="UNKNOWN">C</XMTok>
                <XMTok font="italic" role="UNKNOWN">D</XMTok>
              </XMApp>
            </XMath>
          </Math>
          <MathBranch>
            <td align="right"><Math mode="inline" tex="\displaystyle C" text="C" xml:id="Ch0.E16.m3">
                <XMath>
                  <XMTok font="italic" role="UNKNOWN">C</XMTok>
                </XMath>
              </Math></td>
            <td align="left"><Math mode="inline" tex="\displaystyle=D" text="absent = D" xml:id="Ch0.E16.m4">
                <XMath>
                  <XMApp>
                    <XMTok meaning="equals" role="RELOP">=</XMTok>
                    <XMTok meaning="absent"/>
                    <XMTok font="italic" role="UNKNOWN">D</XMTok>
                  </XMApp>
                </XMath>
              </Math></td>
          </MathBranch>
        </MathFork>
      </equation>
      <equation xml:id="Ch0.E17">
        <tags>
          <tag>(17)</tag>
          <tag role="refnum">17</tag>
        </tags>
        <MathFork>
          <Math tex="\displaystyle X=Y" text="X = Y" xml:id="Ch0.E17.m4">
            <XMath>
              <XMApp>
                <XMTok meaning="equals" role="RELOP">=</XMTok>
                <XMTok font="italic" role="UNKNOWN">X</XMTok>
                <XMTok font="italic" role="UNKNOWN">Y</XMTok>
              </XMApp>
            </XMath>
          </Math>
          <MathBranch>
            <td align="right"><Math mode="inline" tex="\displaystyle X" text="X" xml:id="Ch0.E17.m1">
                <XMath>
                  <XMTok font="italic" role="UNKNOWN">X</XMTok>
                </XMath>
              </Math></td>
            <td align="left"><Math mode="inline" tex="\displaystyle=Y" text="absent = Y" xml:id="Ch0.E17.m2">
                <XMath>
                  <XMApp>
                    <XMTok meaning="equals" role="RELOP">=</XMTok>
                    <XMTok meaning="absent"/>
                    <XMTok font="italic" role="UNKNOWN">Y</XMTok>
                  </XMApp>
                </XMath>
              </Math></td>
          </MathBranch>
        </MathFork>
        <MathFork>
          <Math tex="\displaystyle\begin{split}\displaystyle E&amp;\displaystyle=F\\&#10;&amp;\displaystyle{}+G\end{split}" text="E = F + G" xml:id="Ch0.E17.m5">
            <XMath>
              <XMDual>
                <XMApp>
                  <XMRef idref="Ch0.E17.m3.2.mf"/>
                  <XMRef idref="Ch0.E17.m3.1.mf"/>
                  <XMApp>
                    <XMRef idref="Ch0.E17.m3.4.mf"/>
                    <XMRef idref="Ch0.E17.m3.3.mf"/>
                    <XMRef idref="Ch0.E17.m3.5.mf"/>
                  </XMApp>
                </XMApp>
                <XMArray colsep="0pt" name="aligned">
                  <XMRow>
                    <XMCell align="right">
                      <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E17.m3.1.mf">E</XMTok>
                    </XMCell>
                    <XMCell align="left">
                      <XMApp>
                        <XMTok meaning="equals" role="RELOP" xml:id="Ch0.E17.m3.2.mf">=</XMTok>
                        <XMTok meaning="absent"/>
                        <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E17.m3.3.mf">F</XMTok>
                      </XMApp>
                    </XMCell>
                  </XMRow>
                  <XMRow>
                    <XMCell/>
                    <XMCell align="left">
                      <XMApp>
                        <XMTok meaning="plus" role="ADDOP" xml:id="Ch0.E17.m3.4.mf">+</XMTok>
                        <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E17.m3.5.mf">G</XMTok>
                      </XMApp>
                    </XMCell>
                  </XMRow>
                </XMArray>
              </XMDual>
            </XMath>
          </Math>
          <MathBranch>
            <td align="center" colspan="2"><Math mode="inline" tex="\displaystyle\begin{split}\displaystyle E&amp;\displaystyle=F\\&#10;&amp;\displaystyle{}+G\end{split}" text="E = F + G" xml:id="Ch0.E17.m3">
                <XMath>
                  <XMDual>
                    <XMApp>
                      <XMRef idref="Ch0.E17.m3.2"/>
                      <XMRef idref="Ch0.E17.m3.1"/>
                      <XMApp>
                        <XMRef idref="Ch0.E17.m3.4"/>
                        <XMRef idref="Ch0.E17.m3.3"/>
                        <XMRef idref="Ch0.E17.m3.5"/>
                      </XMApp>
                    </XMApp>
                    <XMArray colsep="0pt" name="aligned">
                      <XMRow>
                        <XMCell align="right">
                          <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E17.m3.1">E</XMTok>
                        </XMCell>
                        <XMCell align="left">
                          <XMApp>
                            <XMTok meaning="equals" role="RELOP" xml:id="Ch0.E17.m3.2">=</XMTok>
                            <XMTok meaning="absent"/>
                            <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E17.m3.3">F</XMTok>
                          </XMApp>
                        </XMCell>
                      </XMRow>
                      <XMRow>
                        <XMCell/>
                        <XMCell align="left">
                          <XMApp>
                            <XMTok meaning="plus" role="ADDOP" xml:id="Ch0.E17.m3.4">+</XMTok>
                            <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E17.m3.5">G</XMTok>
                          </XMApp>
                        </XMCell>
                      </XMRow>
                    </XMArray>
                  </XMDual>
                </XMath>
              </Math></td>
          </MathBranch>
        </MathFork>
      </equation>
      <equation xml:id="Ch0.E18">
        <tags>
          <tag>(18)</tag>
          <tag role="refnum">18</tag>
        </tags>
        <MathFork>
          <Math tex="\displaystyle H=I" text="H = I" xml:id="Ch0.E18.m5">
            <XMath>
              <XMApp>
                <XMTok meaning="equals" role="RELOP">=</XMTok>
                <XMTok font="italic" role="UNKNOWN">H</XMTok>
                <XMTok font="italic" role="UNKNOWN">I</XMTok>
              </XMApp>
            </XMath>
          </Math>
          <MathBranch>
            <td align="right"><Math mode="inline" tex="\displaystyle H" text="H" xml:id="Ch0.E18.m1">
                <XMath>
                  <XMTok font="italic" role="UNKNOWN">H</XMTok>
                </XMath>
              </Math></td>
            <td align="left"><Math mode="inline" tex="\displaystyle=I" text="absent = I" xml:id="Ch0.E18.m2">
                <XMath>
                  <XMApp>
                    <XMTok meaning="equals" role="RELOP">=</XMTok>
                    <XMTok meaning="absent"/>
                    <XMTok font="italic" role="UNKNOWN">I</XMTok>
                  </XMApp>
                </XMath>
              </Math></td>
          </MathBranch>
        </MathFork>
        <MathFork>
          <Math tex="\displaystyle J=K" text="J = K" xml:id="Ch0.E18.m6">
            <XMath>
              <XMApp>
                <XMTok meaning="equals" role="RELOP">=</XMTok>
                <XMTok font="italic" role="UNKNOWN">J</XMTok>
                <XMTok font="italic" role="UNKNOWN">K</XMTok>
              </XMApp>
            </XMath>
          </Math>
          <MathBranch>
            <td align="right"><Math mode="inline" tex="\displaystyle J" text="J" xml:id="Ch0.E18.m3">
                <XMath>
                  <XMTok font="italic" role="UNKNOWN">J</XMTok>
                </XMath>
              </Math></td>
            <td align="left"><Math mode="inline" tex="\displaystyle=K" text="absent = K" xml:id="Ch0.E18.m4">
                <XMath>
                  <XMApp>
                    <XMTok meaning="equals" role="RELOP">=</XMTok>
                    <XMTok meaning="absent"/>
                    <XMTok font="italic" role="UNKNOWN">K</XMTok>
                  </XMApp>
                </XMath>
              </Math></td>
          </MathBranch>
        </MathFork>
      </equation>
      <equation xml:id="Ch0.E19">
        <tags>
          <tag>(19)</tag>
          <tag role="refnum">19</tag>
        </tags>
        <MathFork>
          <Math tex="\displaystyle\begin{split}\displaystyle L&amp;\displaystyle=M\\&#10;&amp;\displaystyle{}+N\end{split}O" text="(L = M + N) * O" xml:id="Ch0.E19.m4">
            <XMath>
              <XMApp>
                <XMTok meaning="times" role="MULOP">⁢</XMTok>
                <XMDual>
                  <XMApp>
                    <XMRef idref="Ch0.E19.m1.2.mf"/>
                    <XMRef idref="Ch0.E19.m1.1.mf"/>
                    <XMApp>
                      <XMRef idref="Ch0.E19.m1.4.mf"/>
                      <XMRef idref="Ch0.E19.m1.3.mf"/>
                      <XMRef idref="Ch0.E19.m1.5.mf"/>
                    </XMApp>
                  </XMApp>
                  <XMArray colsep="0pt" name="aligned">
                    <XMRow>
                      <XMCell align="right">
                        <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E19.m1.1.mf">L</XMTok>
                      </XMCell>
                      <XMCell align="left">
                        <XMApp>
                          <XMTok meaning="equals" role="RELOP" xml:id="Ch0.E19.m1.2.mf">=</XMTok>
                          <XMTok meaning="absent"/>
                          <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E19.m1.3.mf">M</XMTok>
                        </XMApp>
                      </XMCell>
                    </XMRow>
                    <XMRow>
                      <XMCell/>
                      <XMCell align="left">
                        <XMApp>
                          <XMTok meaning="plus" role="ADDOP" xml:id="Ch0.E19.m1.4.mf">+</XMTok>
                          <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E19.m1.5.mf">N</XMTok>
                        </XMApp>
                      </XMCell>
                    </XMRow>
                  </XMArray>
                </XMDual>
                <XMTok font="italic" role="UNKNOWN">O</XMTok>
              </XMApp>
            </XMath>
          </Math>
          <MathBranch>
            <td align="center" colspan="2"><Math mode="inline" tex="\displaystyle\begin{split}\displaystyle L&amp;\displaystyle=M\\&#10;&amp;\displaystyle{}+N\end{split}" text="L = M + N" xml:id="Ch0.E19.m1">
                <XMath>
                  <XMDual>
                    <XMApp>
                      <XMRef idref="Ch0.E19.m1.2"/>
                      <XMRef idref="Ch0.E19.m1.1"/>
                      <XMApp>
                        <XMRef idref="Ch0.E19.m1.4"/>
                        <XMRef idref="Ch0.E19.m1.3"/>
                        <XMRef idref="Ch0.E19.m1.5"/>
                      </XMApp>
                    </XMApp>
                    <XMArray colsep="0pt" name="aligned">
                      <XMRow>
                        <XMCell align="right">
                          <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E19.m1.1">L</XMTok>
                        </XMCell>
                        <XMCell align="left">
                          <XMApp>
                            <XMTok meaning="equals" role="RELOP" xml:id="Ch0.E19.m1.2">=</XMTok>
                            <XMTok meaning="absent"/>
                            <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E19.m1.3">M</XMTok>
                          </XMApp>
                        </XMCell>
                      </XMRow>
                      <XMRow>
                        <XMCell/>
                        <XMCell align="left">
                          <XMApp>
                            <XMTok meaning="plus" role="ADDOP" xml:id="Ch0.E19.m1.4">+</XMTok>
                            <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E19.m1.5">N</XMTok>
                          </XMApp>
                        </XMCell>
                      </XMRow>
                    </XMArray>
                  </XMDual>
                </XMath>
              </Math></td>
            <td align="right"><Math mode="inline" tex="\displaystyle O" text="O" xml:id="Ch0.E19.m2">
                <XMath>
                  <XMTok font="italic" role="UNKNOWN">O</XMTok>
                </XMath>
              </Math></td>
          </MathBranch>
        </MathFork>
        <MathFork>
          <Math tex="\displaystyle=P" text="absent = P" xml:id="Ch0.E19.m5">
            <XMath>
              <XMApp>
                <XMTok meaning="equals" role="RELOP">=</XMTok>
                <XMTok meaning="absent"/>
                <XMTok font="italic" role="UNKNOWN">P</XMTok>
              </XMApp>
            </XMath>
          </Math>
          <MathBranch>
            <td align="left"><Math mode="inline" tex="\displaystyle=P" text="absent = P" xml:id="Ch0.E19.m3">
                <XMath>
                  <XMApp>
                    <XMTok meaning="equals" role="RELOP">=</XMTok>
                    <XMTok meaning="absent"/>
                    <XMTok font="italic" role="UNKNOWN">P</XMTok>
                  </XMApp>
                </XMath>
              </Math></td>
          </MathBranch>
        </MathFork>
      </equation>
      <equation xml:id="Ch0.E20">
        <tags>
          <tag>(20)</tag>
          <tag role="refnum">20</tag>
        </tags>
        <MathFork>
          <Math tex="\displaystyle Q=R" text="Q = R" xml:id="Ch0.E20.m5">
            <XMath>
              <XMApp>
                <XMTok meaning="equals" role="RELOP">=</XMTok>
                <XMTok font="italic" role="UNKNOWN">Q</XMTok>
                <XMTok font="italic" role="UNKNOWN">R</XMTok>
              </XMApp>
            </XMath>
          </Math>
          <MathBranch>
            <td align="right"><Math mode="inline" tex="\displaystyle Q" text="Q" xml:id="Ch0.E20.m1">
                <XMath>
                  <XMTok font="italic" role="UNKNOWN">Q</XMTok>
                </XMath>
              </Math></td>
            <td align="left"><Math mode="inline" tex="\displaystyle=R" text="absent = R" xml:id="Ch0.E20.m2">
                <XMath>
                  <XMApp>
                    <XMTok meaning="equals" role="RELOP">=</XMTok>
                    <XMTok meaning="absent"/>
                    <XMTok font="italic" role="UNKNOWN">R</XMTok>
                  </XMApp>
                </XMath>
              </Math></td>
          </MathBranch>
        </MathFork>
        <MathFork>
          <Math tex="\displaystyle S=T" text="S = T" xml:id="Ch0.E20.m6">
            <XMath>
              <XMApp>
                <XMTok meaning="equals" role="RELOP">=</XMTok>
                <XMTok font="italic" role="UNKNOWN">S</XMTok>
                <XMTok font="italic" role="UNKNOWN">T</XMTok>
              </XMApp>
            </XMath>
          </Math>
          <MathBranch>
            <td align="right"><Math mode="inline" tex="\displaystyle S" text="S" xml:id="Ch0.E20.m3">
                <XMath>
                  <XMTok font="italic" role="UNKNOWN">S</XMTok>
                </XMath>
              </Math></td>
            <td align="left"><Math mode="inline" tex="\displaystyle=T" text="absent = T" xml:id="Ch0.E20.m4">
                <XMath>
                  <XMApp>
                    <XMTok meaning="equals" role="RELOP">=</XMTok>
                    <XMTok meaning="absent"/>
                    <XMTok font="italic" role="UNKNOWN">T</XMTok>
                  </XMApp>
                </XMath>
              </Math></td>
          </MathBranch>
        </MathFork>
      </equation>
    </equationgroup>
  </para>
  <para xml:id="p7">
    <p>Multiple splits in multicolumn align.
Note how each split block contributes to a single row, but it is
horizontally aligned as if it were a column pair in the align.</p>
    <equationgroup class="ltx_eqn_align" xml:id="Ch0.S0.EGx6">
      <equation xml:id="Ch0.E21">
        <tags>
          <tag>(21)</tag>
          <tag role="refnum">21</tag>
        </tags>
        <MathFork>
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                        <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E22.m2.1.mf">L</XMTok>
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                      <XMCell align="left">
                        <XMApp>
                          <XMTok meaning="equals" role="RELOP" xml:id="Ch0.E22.m2.2.mf">=</XMTok>
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                          <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E22.m2.3.mf">M</XMTok>
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                    <XMRow>
                      <XMCell/>
                      <XMCell align="left">
                        <XMApp>
                          <XMTok meaning="plus" role="ADDOP" xml:id="Ch0.E22.m2.4.mf">+</XMTok>
                          <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E22.m2.5.mf">N</XMTok>
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                    <XMRow>
                      <XMCell/>
                      <XMCell align="left">
                        <XMApp>
                          <XMTok meaning="plus" role="ADDOP" xml:id="Ch0.E22.m2.6.mf">+</XMTok>
                          <XMTok font="italic" role="UNKNOWN" xml:id="Ch0.E22.m2.7.mf">Z</XMTok>
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                      <XMApp>
                        <XMRef idref="Ch0.E22.m1.10"/>
                        <XMRef idref="Ch0.E22.m1.9"/>
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                        <XMCell align="left">
                          <XMApp>
                            <XMTok meaning="equals" role="RELOP" xml:id="Ch0.E22.m1.8">=</XMTok>
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                      <XMRow>
                        <XMCell/>
                        <XMCell align="left">
                          <XMApp>
                            <XMTok meaning="plus" role="ADDOP" xml:id="Ch0.E22.m1.10">+</XMTok>
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                        <XMRef idref="Ch0.E22.m2.4"/>
                        <XMRef idref="Ch0.E22.m2.3"/>
                        <XMRef idref="Ch0.E22.m2.5"/>
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                        <XMCell align="right">
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                      <XMRow>
                        <XMCell/>
                        <XMCell align="left">
                          <XMApp>
                            <XMTok meaning="plus" role="ADDOP" xml:id="Ch0.E22.m2.4">+</XMTok>
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                      <XMRow>
                        <XMCell/>
                        <XMCell align="left">
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                            <XMTok meaning="plus" role="ADDOP" xml:id="Ch0.E22.m2.6">+</XMTok>
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        <tags>
          <tag>(23)</tag>
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        <MathFork>
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                    <XMTok font="italic" role="UNKNOWN">T</XMTok>
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</document>
