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          <e type="operand">1</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">Z</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">4</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="6">mat</e>
          <e type="operand">A</e>
          <e type="operand">2</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">B</e>
          <e type="operand">2</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">C</e>
          <e type="operand">2</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">Z</e>
          <e type="operand">2</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">4</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="6">mat</e>
          <e type="operand" style="string">o</e>
          <e type="operand" style="string">o</e>
          <e type="operand" style="string">o</e>
          <e type="operand" style="string">*</e>
          <e type="operand">4</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="6">mat</e>
          <e type="function" preserve="true" args="3">augment</e>
          <e type="operator" args="2">:</e>
        </input>
        <result action="numeric">
          <e type="operand">1.5</e>
          <e type="operand">3</e>
          <e type="operand" style="string">o</e>
          <e type="operand">6</e>
          <e type="operand">4.5</e>
          <e type="operand" style="string">o</e>
          <e type="operand">3</e>
          <e type="operand">7.5</e>
          <e type="operand" style="string">o</e>
          <e type="operand">3.5</e>
          <e type="operand">5</e>
          <e type="operand" style="string">*</e>
          <e type="operand">4</e>
          <e type="operand">3</e>
          <e type="function" preserve="true" args="14">mat</e>
        </result>
      </math>
    </region>
    <region id="24" left="180" top="747" width="150" height="63" color="#000000" bgColor="#ffffff" fontSize="10" showInputData="False">
      <math decimalPlaces="4">
        <input>
          <e type="operand">KPoints</e>
          <e type="operand">L'</e>
          <e type="operand" style="string">+</e>
          <e type="function" args="2">Point</e>
          <e type="operator" args="2">:</e>
        </input>
        <result action="numeric">
          <e type="operand">6.5</e>
          <e type="operand">8</e>
          <e type="operand" style="string">+</e>
          <e type="operand">0.25</e>
          <e type="operator" args="1">-</e>
          <e type="operand">5.75</e>
          <e type="operand" style="string">+</e>
          <e type="operand">4.25</e>
          <e type="operand">1.25</e>
          <e type="operand" style="string">+</e>
          <e type="operand">3</e>
          <e type="operand">3</e>
          <e type="function" preserve="true" args="11">mat</e>
        </result>
      </math>
    </region>
    <region id="25" left="378" top="747" width="92" height="81" color="#000000" bgColor="#ffffff" fontSize="10" showInputData="False">
      <math decimalPlaces="4">
        <input>
          <e type="operand">Triangle</e>
          <e type="operand">L</e>
          <e type="function" args="1">Polygon</e>
          <e type="operator" args="2">:</e>
        </input>
        <result action="numeric">
          <e type="operand">1.5</e>
          <e type="operand">3</e>
          <e type="operand">6</e>
          <e type="operand">4.5</e>
          <e type="operand">3</e>
          <e type="operand">7.5</e>
          <e type="operand">1.5</e>
          <e type="operand">3</e>
          <e type="operand">4</e>
          <e type="operand">2</e>
          <e type="function" preserve="true" args="10">mat</e>
        </result>
      </math>
    </region>
    <region id="26" left="540" top="756" width="305" height="81" color="#000000" bgColor="#ffffff" fontSize="10">
      <math decimalPlaces="4">
        <input>
          <e type="operand">KTriangle</e>
          <e type="operand">L'</e>
          <e type="function" args="1">Polygon</e>
          <e type="operator" args="2">:</e>
        </input>
        <result action="numeric">
          <e type="operand">6.5</e>
          <e type="operand">8</e>
          <e type="operand">0.25</e>
          <e type="operator" args="1">-</e>
          <e type="operand">5.75</e>
          <e type="operand">4.25</e>
          <e type="operand">1.25</e>
          <e type="operand">6.5</e>
          <e type="operand">8</e>
          <e type="operand">4</e>
          <e type="operand">2</e>
          <e type="function" preserve="true" args="10">mat</e>
        </result>
      </math>
    </region>
    <region id="27" top="918" color="#000000" bgColor="#ffffff">
      <area terminator="true" />
    </region>
  </region>
  <region id="28" left="270" top="936" width="598" height="437" color="#000000" bgColor="#ffffff" fontSize="10">
    <plot type="2d" render="lines" scale_x="4.30077672368229" scale_y="4.30077672368229" scale_z="0" rotate_x="0" rotate_y="0" rotate_z="0" transpose_x="-235" transpose_y="-184" transpose_z="0" animate="Z" frameRate="20" repeat="-1">
      <input>
        <e type="operand">OPoints</e>
        <e type="operand">KPoints</e>
        <e type="operand">Triangle</e>
        <e type="operand">KTriangle</e>
        <e type="operand">LineZA</e>
        <e type="operand">LineZB</e>
        <e type="operand">LineZC</e>
        <e type="operand">7</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="9">sys</e>
      </input>
    </plot>
  </region>
  <region id="29" left="936" top="936" width="118" height="165" color="#000000" bgColor="#ffffff" fontSize="10">
    <math decimalPlaces="4">
      <input>
        <e type="operand">L'</e>
      </input>
      <result action="numeric">
        <e type="operand">6.5</e>
        <e type="operand">8</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">mat</e>
        <e type="operand">0.25</e>
        <e type="operator" args="1">-</e>
        <e type="operand">5.75</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">mat</e>
        <e type="operand">4.25</e>
        <e type="operand">1.25</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">mat</e>
        <e type="operand">6.5</e>
        <e type="operand">8</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">mat</e>
        <e type="operand">4</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="6">sys</e>
      </result>
    </math>
  </region>
  <region id="30" left="45" top="945" width="196" height="81" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">OPoints</e>
      </input>
      <result action="numeric">
        <e type="operand">1.5</e>
        <e type="operand">3</e>
        <e type="operand" style="string">o</e>
        <e type="operand">6</e>
        <e type="operand">4.5</e>
        <e type="operand" style="string">o</e>
        <e type="operand">3</e>
        <e type="operand">7.5</e>
        <e type="operand" style="string">o</e>
        <e type="operand">3.5</e>
        <e type="operand">5</e>
        <e type="operand" style="string">*</e>
        <e type="operand">4</e>
        <e type="operand">3</e>
        <e type="function" preserve="true" args="14">mat</e>
      </result>
    </math>
  </region>
  <region id="31" left="972" top="1017" width="87" height="32" color="#000000" bgColor="#ffffff" fontSize="10">
    <math decimalPlaces="4">
      <input>
        <e type="operand">L'</e>
        <e type="operand">4</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operand">L'</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="32" left="45" top="1026" width="221" height="63" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">KPoints</e>
      </input>
      <result action="numeric">
        <e type="operand">6.5</e>
        <e type="operand">8</e>
        <e type="operand" style="string">+</e>
        <e type="operand">0.25</e>
        <e type="operator" args="1">-</e>
        <e type="operand">5.75</e>
        <e type="operand" style="string">+</e>
        <e type="operand">4.25</e>
        <e type="operand">1.25</e>
        <e type="operand" style="string">+</e>
        <e type="operand">3</e>
        <e type="operand">3</e>
        <e type="function" preserve="true" args="11">mat</e>
      </result>
    </math>
  </region>
  <region id="33" left="927" top="1062" width="200" height="81" color="#000000" bgColor="#ffffff" fontSize="10">
    <math decimalPlaces="4">
      <input>
        <e type="operand">L'</e>
        <e type="operand">1</e>
        <e type="operand">0</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">mat</e>
        <e type="operator" args="2">*</e>
        <e type="function" preserve="true" args="1">sys2mat</e>
      </input>
      <result action="numeric">
        <e type="operand">6.5</e>
        <e type="operand">0.25</e>
        <e type="operator" args="1">-</e>
        <e type="operand">4.25</e>
        <e type="operand">6.5</e>
        <e type="operand">4</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="6">mat</e>
      </result>
    </math>
  </region>
  <region id="34" left="45" top="1089" width="171" height="81" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">Triangle</e>
      </input>
      <result action="numeric">
        <e type="operand">1.5</e>
        <e type="operand">3</e>
        <e type="operand">6</e>
        <e type="operand">4.5</e>
        <e type="operand">3</e>
        <e type="operand">7.5</e>
        <e type="operand">1.5</e>
        <e type="operand">3</e>
        <e type="operand">4</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="10">mat</e>
      </result>
    </math>
  </region>
  <region id="35" left="45" top="1170" width="204" height="81" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">KTriangle</e>
      </input>
      <result action="numeric">
        <e type="operand">6.5</e>
        <e type="operand">8</e>
        <e type="operand">0.25</e>
        <e type="operator" args="1">-</e>
        <e type="operand">5.75</e>
        <e type="operand">4.25</e>
        <e type="operand">1.25</e>
        <e type="operand">6.5</e>
        <e type="operand">8</e>
        <e type="operand">4</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="10">mat</e>
      </result>
    </math>
  </region>
  <region id="36" left="45" top="1251" width="137" height="45" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">LineZA</e>
      </input>
      <result action="numeric">
        <e type="operand">3.5</e>
        <e type="operand">5</e>
        <e type="operand">6.5</e>
        <e type="operand">8</e>
        <e type="operand">2</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="6">mat</e>
      </result>
    </math>
  </region>
  <region id="37" left="45" top="1296" width="179" height="45" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">LineZB</e>
      </input>
      <result action="numeric">
        <e type="operand">3.5</e>
        <e type="operand">5</e>
        <e type="operand">0.25</e>
        <e type="operator" args="1">-</e>
        <e type="operand">5.75</e>
        <e type="operand">2</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="6">mat</e>
      </result>
    </math>
  </region>
  <region id="38" left="45" top="1359" width="170" height="45" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">LineZC</e>
      </input>
      <result action="numeric">
        <e type="operand">3.5</e>
        <e type="operand">5</e>
        <e type="operand">4.25</e>
        <e type="operand">1.25</e>
        <e type="operand">2</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="6">mat</e>
      </result>
    </math>
  </region>
  <region id="39" left="108" top="1494" width="93" height="165" color="#000000" bgColor="#ffffff" fontSize="10">
    <math decimalPlaces="4">
      <input>
        <e type="operand">L</e>
      </input>
      <result action="numeric">
        <e type="operand">1.5</e>
        <e type="operand">3</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">mat</e>
        <e type="operand">6</e>
        <e type="operand">4.5</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">mat</e>
        <e type="operand">3</e>
        <e type="operand">7.5</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">mat</e>
        <e type="operand">1.5</e>
        <e type="operand">3</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">mat</e>
        <e type="operand">4</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="6">sys</e>
      </result>
    </math>
  </region>
  <region id="40" left="0" top="1503" width="110" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <text lang="eng">
      <p>Extend a sys</p>
    </text>
  </region>
  <region id="41" left="207" top="1503" width="57" height="32" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2" decimalPlaces="4">
      <input>
        <e type="operand">L</e>
        <e type="operand">4</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operand">Z</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="42" left="288" top="1503" width="93" height="165" color="#000000" bgColor="#ffffff" fontSize="10">
    <math decimalPlaces="4">
      <input>
        <e type="operand">L</e>
      </input>
      <result action="numeric">
        <e type="operand">1.5</e>
        <e type="operand">3</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">mat</e>
        <e type="operand">6</e>
        <e type="operand">4.5</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">mat</e>
        <e type="operand">3</e>
        <e type="operand">7.5</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">mat</e>
        <e type="operand">3.5</e>
        <e type="operand">5</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">mat</e>
        <e type="operand">4</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="6">sys</e>
      </result>
    </math>
  </region>
  <region id="43" left="468" top="1521" width="199" height="81" color="#000000" bgColor="#ffffff" fontSize="10">
    <math decimalPlaces="4">
      <input>
        <e type="operand">Triangle</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="2">col</e>
      </input>
      <result action="numeric">
        <e type="operand">1.5</e>
        <e type="operand">6</e>
        <e type="operand">3</e>
        <e type="operand">1.5</e>
        <e type="operand">4</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="6">mat</e>
      </result>
    </math>
  </region>
  <region id="44" left="477" top="1566" width="37" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <math decimalPlaces="4">
      <input>
        <e type="operand">Rec</e>
      </input>
    </math>
  </region>
  <region id="45" left="135" top="1701" width="538" height="67" color="#000000" bgColor="#ffffff" fontSize="10">
    <math decimalPlaces="4">
      <input>
        <e type="operand">Pgn</e>
        <e type="function" args="1">Fläche</e>
        <e type="operand">1</e>
        <e type="operand">2</e>
        <e type="operator" args="2">/</e>
        <e type="operand">Pgn</e>
        <e type="operand">i</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operand">Pgn</e>
        <e type="operand">i</e>
        <e type="operand">1</e>
        <e type="operator" args="2">+</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operator" args="2">+</e>
        <e type="bracket">(</e>
        <e type="operand">Pgn</e>
        <e type="operand">i</e>
        <e type="operand">1</e>
        <e type="operator" args="2">+</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operand">Pgn</e>
        <e type="operand">i</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operator" args="2">-</e>
        <e type="bracket">(</e>
        <e type="operator" args="2">*</e>
        <e type="operand">i</e>
        <e type="operand">1</e>
        <e type="operand">Pgn</e>
        <e type="function" preserve="true" args="1">rows</e>
        <e type="operand">1</e>
        <e type="operator" args="2">-</e>
        <e type="function" preserve="true" args="4">sum</e>
        <e type="operator" args="2">*</e>
        <e type="bracket">(</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="46" left="135" top="1800" width="172" height="26" color="#000000" bgColor="#ffffff" fontSize="10">
    <math decimalPlaces="4">
      <input>
        <e type="operand">Triangle</e>
        <e type="function" args="1">Fläche</e>
      </input>
      <result action="numeric">
        <e type="operand">9</e>
      </result>
    </math>
  </region>
</regions>