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          <e type="operand">n.u</e>
          <e type="operand">X</e>
          <e type="function" args="1">length</e>
          <e type="operand">1</e>
          <e type="operator" args="2">-</e>
          <e type="operator" args="2">:</e>
          <e type="operand">V</e>
          <e type="operand">0</e>
          <e type="operand">1</e>
          <e type="function" args="2">range</e>
          <e type="operator" args="2">:</e>
          <e type="operand">r</e>
          <e type="operand">1</e>
          <e type="operator" args="2">:</e>
          <e type="operand">1</e>
          <e type="operand">4</e>
          <e type="function" args="6">mat</e>
          <e type="operand">M</e>
          <e type="operand">n.p</e>
          <e type="operand">n.u</e>
          <e type="operator" args="2">*</e>
          <e type="operand">2</e>
          <e type="function" args="2">matrix</e>
          <e type="operator" args="2">:</e>
          <e type="operand">F</e>
          <e type="operand">n.u</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="operand">2</e>
          <e type="function" args="2">matrix</e>
          <e type="operator" args="2">:</e>
          <e type="operand">1</e>
          <e type="operand">2</e>
          <e type="function" args="4">mat</e>
          <e type="operand">T</e>
          <e type="operand" style="string">H</e>
          <e type="operator" args="2">≡</e>
          <e type="operand">x</e>
          <e type="operand">v</e>
          <e type="function" args="2">φ</e>
          <e type="operand">x</e>
          <e type="operand">v</e>
          <e type="operand">x</e>
          <e type="function" args="1">f</e>
          <e type="operator" args="2">*</e>
          <e type="operand">1</e>
          <e type="operand">2</e>
          <e type="function" args="4">mat</e>
          <e type="operator" args="2">:</e>
          <e type="operand">x</e>
          <e type="operand">v</e>
          <e type="function" args="2">φ</e>
          <e type="operand">x</e>
          <e type="operand">v</e>
          <e type="operand">x</e>
          <e type="function" args="1">f</e>
          <e type="operator" args="2">*</e>
          <e type="operand">1</e>
          <e type="operand">v</e>
          <e type="operator" args="2">-</e>
          <e type="bracket">(</e>
          <e type="operand">x</e>
          <e type="function" args="1">g</e>
          <e type="operator" args="2">*</e>
          <e type="operator" args="2">+</e>
          <e type="operand">1</e>
          <e type="operand">2</e>
          <e type="function" args="4">mat</e>
          <e type="operator" args="2">:</e>
          <e type="function" args="3">if</e>
          <e type="operand">u</e>
          <e type="operand">1</e>
          <e type="operand">n.u</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="bracket">(</e>
          <e type="function" args="2">range</e>
          <e type="operand">v</e>
          <e type="operand">1</e>
          <e type="operand">2</e>
          <e type="function" args="2">range</e>
          <e type="operand">F</e>
          <e type="operand">u</e>
          <e type="operand">v</e>
          <e type="function" args="3">el</e>
          <e type="operand">X</e>
          <e type="operand">u</e>
          <e type="function" args="2">el</e>
          <e type="operand">V</e>
          <e type="operand">v</e>
          <e type="function" args="2">el</e>
          <e type="function" args="2">φ</e>
          <e type="function" args="1">eval</e>
          <e type="operator" args="2">:</e>
          <e type="function" args="3">for</e>
          <e type="function" args="3">for</e>
          <e type="operand">u</e>
          <e type="operand">1</e>
          <e type="operand">n.u</e>
          <e type="function" args="2">range</e>
          <e type="operand">c</e>
          <e type="operand">1</e>
          <e type="operand">2</e>
          <e type="function" args="2">range</e>
          <e type="operand">M</e>
          <e type="operand">r</e>
          <e type="operand">c</e>
          <e type="function" args="3">el</e>
          <e type="operand">F</e>
          <e type="operand">u</e>
          <e type="operand">1</e>
          <e type="function" args="3">el</e>
          <e type="operand">c</e>
          <e type="function" args="2">el</e>
          <e type="operator" args="2">:</e>
          <e type="operand">M</e>
          <e type="operand">r</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="operand">c</e>
          <e type="function" args="3">el</e>
          <e type="operand">F</e>
          <e type="operand">u</e>
          <e type="operand">2</e>
          <e type="function" args="3">el</e>
          <e type="operand">c</e>
          <e type="function" args="2">el</e>
          <e type="operator" args="2">:</e>
          <e type="operand">M</e>
          <e type="operand">r</e>
          <e type="operand">2</e>
          <e type="operator" args="2">+</e>
          <e type="operand">c</e>
          <e type="function" args="3">el</e>
          <e type="operand">F</e>
          <e type="operand">u</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="operand">2</e>
          <e type="function" args="3">el</e>
          <e type="operand">c</e>
          <e type="function" args="2">el</e>
          <e type="operator" args="2">:</e>
          <e type="operand">M</e>
          <e type="operand">r</e>
          <e type="operand">3</e>
          <e type="operator" args="2">+</e>
          <e type="operand">c</e>
          <e type="function" args="3">el</e>
          <e type="operand">F</e>
          <e type="operand">u</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="operand">1</e>
          <e type="function" args="3">el</e>
          <e type="operand">c</e>
          <e type="function" args="2">el</e>
          <e type="operator" args="2">:</e>
          <e type="operand">M</e>
          <e type="operand">r</e>
          <e type="operand">4</e>
          <e type="operator" args="2">+</e>
          <e type="operand">c</e>
          <e type="function" args="3">el</e>
          <e type="operand">F</e>
          <e type="operand">u</e>
          <e type="operand">1</e>
          <e type="function" args="3">el</e>
          <e type="operand">c</e>
          <e type="function" args="2">el</e>
          <e type="operator" args="2">:</e>
          <e type="operand">5</e>
          <e type="operand">1</e>
          <e type="function" args="7">line</e>
          <e type="function" args="3">for</e>
          <e type="operand">r</e>
          <e type="operand">r</e>
          <e type="operand">n.p</e>
          <e type="operator" args="2">+</e>
          <e type="operator" args="2">:</e>
          <e type="operand">2</e>
          <e type="operand">1</e>
          <e type="function" args="4">line</e>
          <e type="function" args="3">for</e>
          <e type="operand">M</e>
          <e type="function" args="1">eval</e>
          <e type="operand">6</e>
          <e type="operand">1</e>
          <e type="function" args="8">line</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region id="6" left="54" top="1215" width="408" height="32" color="#000000" bgColor="#ffffff" fontSize="10">
      <math optimize="2">
        <input>
          <e type="operand">1</e>
          <e type="function" args="1">f</e>
          <e type="operand">x</e>
          <e type="function" args="2">Hatch</e>
          <e type="operand">x#</e>
          <e type="function" args="1">f</e>
          <e type="operand">x#</e>
          <e type="function" args="1">f</e>
          <e type="operand">x</e>
          <e type="operand" style="string">H</e>
          <e type="function" args="4">HatchOrFill</e>
          <e type="operand">1</e>
          <e type="operand">1</e>
          <e type="function" args="3">line</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region id="7" left="54" top="1251" width="438" height="32" color="#000000" bgColor="#ffffff" fontSize="10">
      <math optimize="2">
        <input>
          <e type="operand">1</e>
          <e type="function" args="1">f</e>
          <e type="operand">a</e>
          <e type="operand">b</e>
          <e type="operand">n</e>
          <e type="function" args="4">Hatch</e>
          <e type="operand">x#</e>
          <e type="function" args="1">f</e>
          <e type="operand">a</e>
          <e type="operand">b</e>
          <e type="operand">n</e>
          <e type="function" args="3">LinSpace</e>
          <e type="function" args="2">Hatch</e>
          <e type="operand">1</e>
          <e type="operand">1</e>
          <e type="function" args="3">line</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region id="8" left="54" top="1287" width="445" height="32" color="#000000" bgColor="#ffffff" fontSize="10">
      <math optimize="2">
        <input>
          <e type="operand">1</e>
          <e type="function" args="1">f</e>
          <e type="operand">1</e>
          <e type="function" args="1">g</e>
          <e type="operand">x</e>
          <e type="function" args="3">Fill</e>
          <e type="operand">x#</e>
          <e type="function" args="1">f</e>
          <e type="operand">x#</e>
          <e type="function" args="1">g</e>
          <e type="operand">x</e>
          <e type="operand" style="string">F</e>
          <e type="function" args="4">HatchOrFill</e>
          <e type="operand">1</e>
          <e type="operand">1</e>
          <e type="function" args="3">line</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region id="9" left="54" top="1323" width="521" height="32" color="#000000" bgColor="#ffffff" fontSize="10">
      <math optimize="2">
        <input>
          <e type="operand">1</e>
          <e type="function" args="1">f</e>
          <e type="operand">1</e>
          <e type="function" args="1">g</e>
          <e type="operand">a</e>
          <e type="operand">b</e>
          <e type="operand">n</e>
          <e type="function" args="5">Fill</e>
          <e type="operand">x#</e>
          <e type="function" args="1">f</e>
          <e type="operand">x#</e>
          <e type="function" args="1">g</e>
          <e type="operand">a</e>
          <e type="operand">b</e>
          <e type="operand">n</e>
          <e type="function" args="3">LinSpace</e>
          <e type="function" args="3">Fill</e>
          <e type="operand">1</e>
          <e type="operand">1</e>
          <e type="function" args="3">line</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region id="10" left="54" top="1368" width="377" height="115" color="#000000" bgColor="#ffffff" fontSize="10">
      <math optimize="2">
        <input>
          <e type="operand">a</e>
          <e type="operand">b</e>
          <e type="operand">n</e>
          <e type="function" args="3">LinSpace</e>
          <e type="operand">d</e>
          <e type="operand">b</e>
          <e type="operand">a</e>
          <e type="operator" args="2">-</e>
          <e type="operand">n</e>
          <e type="operand">1</e>
          <e type="operator" args="2">-</e>
          <e type="operator" args="2">/</e>
          <e type="operator" args="2">:</e>
          <e type="operand">v</e>
          <e type="operand">n</e>
          <e type="operand">1</e>
          <e type="function" args="2">matrix</e>
          <e type="operator" args="2">:</e>
          <e type="operand">1</e>
          <e type="operand">2</e>
          <e type="function" args="4">mat</e>
          <e type="operand">k</e>
          <e type="operand">1</e>
          <e type="operand">n</e>
          <e type="function" args="2">range</e>
          <e type="operator" args="2">:</e>
          <e type="operand">v</e>
          <e type="operand">k</e>
          <e type="function" args="2">el</e>
          <e type="operand">k</e>
          <e type="operand">1</e>
          <e type="operator" args="2">-</e>
          <e type="bracket">(</e>
          <e type="operand">d</e>
          <e type="operator" args="2">*</e>
          <e type="operator" args="2">:</e>
          <e type="operand">a</e>
          <e type="operand">v</e>
          <e type="operator" args="2">+</e>
          <e type="function" args="1">eval</e>
          <e type="operand">4</e>
          <e type="operand">1</e>
          <e type="function" args="6">line</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region id="11" top="1494" color="#000000" bgColor="#ffffff">
      <area terminator="true" />
    </region>
  </region>
  <region id="12" left="54" top="1521" width="119" height="24" color="#804000" bgColor="#ffffff" fontSize="10">
    <text lang="spa">
      <p>Torus Example</p>
    </text>
  </region>
  <region id="13" left="270" top="1521" width="309" height="75" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2" decimalPlaces="2">
      <description active="false" position="Top" lang="spa">
        <p>Toroid</p>
      </description>
      <input>
        <e type="operand">u</e>
        <e type="operand">v</e>
        <e type="function" args="2">T</e>
        <e type="operand">R</e>
        <e type="operand">r</e>
        <e type="operand">u</e>
        <e type="function" args="1">cos</e>
        <e type="operator" args="2">*</e>
        <e type="operator" args="2">+</e>
        <e type="bracket">(</e>
        <e type="operand">v</e>
        <e type="function" args="1">cos</e>
        <e type="operator" args="2">*</e>
        <e type="operand">R</e>
        <e type="operand">r</e>
        <e type="operand">u</e>
        <e type="function" args="1">cos</e>
        <e type="operator" args="2">*</e>
        <e type="operator" args="2">+</e>
        <e type="bracket">(</e>
        <e type="operand">v</e>
        <e type="function" args="1">sin</e>
        <e type="operator" args="2">*</e>
        <e type="operand">r</e>
        <e type="operand">u</e>
        <e type="function" args="1">sin</e>
        <e type="operator" args="2">*</e>
        <e type="operand">3</e>
        <e type="operand">1</e>
        <e type="function" args="5">mat</e>
        <e type="function" args="1">eval</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="14" left="612" top="1521" width="46" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2">
      <input>
        <e type="operand">R</e>
        <e type="operand">3</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="15" left="1395" top="1530" width="337" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <text lang="spa">
      <p> n = ii * ( Np * Nv + Nv - 1 ) + Np * jj;</p>
    </text>
  </region>
  <region id="16" left="612" top="1548" width="46" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2">
      <input>
        <e type="operand">r</e>
        <e type="operand">2</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="17" left="630" top="1584" width="99" height="31" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2">
      <input>
        <e type="operand">t.0</e>
        <e type="operand">0</e>
        <e type="function" args="1">time</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="18" left="1485" top="1611" width="334" height="258" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2" evaluate="false">
      <input>
        <e type="operand">`i</e>
        <e type="operand">0</e>
        <e type="operand">n.u</e>
        <e type="operand">1</e>
        <e type="operator" args="2">-</e>
        <e type="bracket">(</e>
        <e type="function" args="2">range</e>
        <e type="operand">u</e>
        <e type="operand">u.1</e>
        <e type="operand">`i</e>
        <e type="operand">du</e>
        <e type="operator" args="2">*</e>
        <e type="operator" args="2">+</e>
        <e type="operator" args="2">:</e>
        <e type="operand">`j</e>
        <e type="operand">0</e>
        <e type="operand">n.v</e>
        <e type="operand">1</e>
        <e type="operator" args="2">-</e>
        <e type="bracket">(</e>
        <e type="function" args="2">range</e>
        <e type="operand">v</e>
        <e type="operand">v.1</e>
        <e type="operand">`j</e>
        <e type="operand">dv</e>
        <e type="operator" args="2">*</e>
        <e type="operator" args="2">+</e>
        <e type="operator" args="2">:</e>
        <e type="operand">n</e>
        <e type="operand">`i</e>
        <e type="operand">n.p</e>
        <e type="operand">n.v</e>
        <e type="operator" args="2">*</e>
        <e type="operand">n.v</e>
        <e type="operator" args="2">+</e>
        <e type="operand">1</e>
        <e type="operator" args="2">-</e>
        <e type="bracket">(</e>
        <e type="operator" args="2">*</e>
        <e type="operand">n.p</e>
        <e type="operand">`j</e>
        <e type="operator" args="2">*</e>
        <e type="operator" args="2">+</e>
        <e type="operator" args="2">:</e>
        <e type="operand">M</e>
        <e type="operand">M</e>
        <e type="operand">u</e>
        <e type="operand">v</e>
        <e type="function" args="2">f</e>
        <e type="function" args="2">augment</e>
        <e type="function" args="1">eval</e>
        <e type="operator" args="2">:</e>
        <e type="operand">M</e>
        <e type="operand">M</e>
        <e type="operand">u</e>
        <e type="operand">v</e>
        <e type="operand">dv</e>
        <e type="operator" args="2">+</e>
        <e type="function" args="2">f</e>
        <e type="function" args="2">augment</e>
        <e type="function" args="1">eval</e>
        <e type="operator" args="2">:</e>
        <e type="operand">M</e>
        <e type="operand">M</e>
        <e type="operand">u</e>
        <e type="operand">du</e>
        <e type="operator" args="2">+</e>
        <e type="operand">v</e>
        <e type="operand">dv</e>
        <e type="operator" args="2">+</e>
        <e type="function" args="2">f</e>
        <e type="function" args="2">augment</e>
        <e type="function" args="1">eval</e>
        <e type="operator" args="2">:</e>
        <e type="operand">M</e>
        <e type="operand">M</e>
        <e type="operand">u</e>
        <e type="operand">du</e>
        <e type="operator" args="2">+</e>
        <e type="operand">v</e>
        <e type="function" args="2">f</e>
        <e type="function" args="2">augment</e>
        <e type="function" args="1">eval</e>
        <e type="operator" args="2">:</e>
        <e type="operand">M</e>
        <e type="operand">M</e>
        <e type="operand">u</e>
        <e type="operand">v</e>
        <e type="function" args="2">f</e>
        <e type="function" args="2">augment</e>
        <e type="function" args="1">eval</e>
        <e type="operator" args="2">:</e>
        <e type="operand">7</e>
        <e type="operand">1</e>
        <e type="function" args="9">line</e>
        <e type="function" args="3">for</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" args="4">line</e>
        <e type="function" args="3">for</e>
      </input>
    </math>
  </region>
  <region id="19" left="54" top="1629" width="60" height="30" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2">
      <input>
        <e type="operand">n.1</e>
        <e type="operand">20</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="20" left="135" top="1629" width="366" height="33" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2">
      <input>
        <e type="operand">T1</e>
        <e type="operand">u</e>
        <e type="operand">v</e>
        <e type="function" args="2">T</e>
        <e type="operand">0</e>
        <e type="operand">2</e>
        <e type="operand">π</e>
        <e type="operator" args="2">*</e>
        <e type="operand">0</e>
        <e type="operand">2</e>
        <e type="operand">π</e>
        <e type="operator" args="2">*</e>
        <e type="operand">n.1</e>
        <e type="operand">n.1</e>
        <e type="function" args="7">CreateMesh</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="21" left="513" top="1629" width="99" height="31" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2">
      <input>
        <e type="operand">t.1</e>
        <e type="operand">0</e>
        <e type="function" args="1">time</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="22" left="630" top="1629" width="136" height="30" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">t.1</e>
        <e type="operand">t.0</e>
        <e type="operator" args="2">-</e>
      </input>
      <result action="numeric">
        <e type="operand">2.389</e>
        <e type="operand" style="unit">s</e>
        <e type="operator" args="2">*</e>
      </result>
    </math>
  </region>
  <region id="23" left="54" top="1665" width="60" height="30" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2">
      <input>
        <e type="operand">n.2</e>
        <e type="operand">20</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="24" left="135" top="1665" width="352" height="33" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2">
      <input>
        <e type="operand">T2</e>
        <e type="operand">u</e>
        <e type="operand">v</e>
        <e type="function" args="2">T</e>
        <e type="operand">0</e>
        <e type="operand">2</e>
        <e type="operand">π</e>
        <e type="operator" args="2">*</e>
        <e type="operand">0</e>
        <e type="operand">2</e>
        <e type="operand">π</e>
        <e type="operator" args="2">*</e>
        <e type="operand">n.2</e>
        <e type="operand">n.2</e>
        <e type="function" args="7">MeshPlot</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="25" left="513" top="1665" width="99" height="31" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2">
      <input>
        <e type="operand">t.2</e>
        <e type="operand">0</e>
        <e type="function" args="1">time</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="26" left="630" top="1665" width="136" height="30" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">t.2</e>
        <e type="operand">t.1</e>
        <e type="operator" args="2">-</e>
      </input>
      <result action="numeric">
        <e type="operand">3.779</e>
        <e type="operand" style="unit">s</e>
        <e type="operator" args="2">*</e>
      </result>
    </math>
  </region>
  <region id="27" left="54" top="1710" width="303" height="204" color="#000000" bgColor="#ffffff" fontSize="10">
    <plot grid="false" type="3d" render="lines" scale_x="6.11385431248715" scale_y="6.11385431248715" scale_z="6.11385431248715" rotate_x="1995" rotate_y="-1087" rotate_z="0" transpose_x="0" transpose_y="0" transpose_z="0">
      <input>
        <e type="operand">T1</e>
      </input>
    </plot>
  </region>
  <region id="28" left="450" top="1710" width="303" height="204" color="#000000" bgColor="#ffffff" fontSize="10">
    <plot grid="false" type="3d" render="lines" scale_x="7.66133245961489" scale_y="7.66133245961489" scale_z="7.66133245961489" rotate_x="1833" rotate_y="-1167" rotate_z="0" transpose_x="0" transpose_y="0" transpose_z="0">
      <input>
        <e type="operand">T2</e>
      </input>
    </plot>
  </region>
  <region id="29" left="54" top="1962" width="119" height="24" color="#804000" bgColor="#ffffff" fontSize="10">
    <text lang="spa">
      <p>Hatch Example</p>
    </text>
  </region>
  <region id="30" left="198" top="1962" width="122" height="43" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2">
      <input>
        <e type="operand">c</e>
        <e type="function" args="1">f.1</e>
        <e type="operand">c</e>
        <e type="function" args="1">sin</e>
        <e type="operand">c</e>
        <e type="operator" args="2">/</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="31" left="333" top="1962" width="118" height="30" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2">
      <input>
        <e type="operand">φ</e>
        <e type="function" args="1">f.2</e>
        <e type="operand">φ</e>
        <e type="function" args="1">cos</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="32" left="468" top="1962" width="115" height="50" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2">
      <input>
        <e type="operand">y</e>
        <e type="function" args="1">f.3</e>
        <e type="operand">y</e>
        <e type="operand">2</e>
        <e type="operator" args="2">^</e>
        <e type="operand">8</e>
        <e type="operator" args="2">/</e>
        <e type="operand">1</e>
        <e type="operator" args="2">-</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="33" left="621" top="1962" width="99" height="31" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2">
      <input>
        <e type="operand">t.3</e>
        <e type="operand">0</e>
        <e type="function" args="1">time</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="34" left="54" top="2025" width="496" height="160" color="#000000" bgColor="#ffffff" fontSize="10">
    <plot grid="false" type="2d" render="lines" scale_x="2.70873081310393" scale_y="1.09246530826429" scale_z="2.01408156738282" rotate_x="0" rotate_y="0" rotate_z="0" transpose_x="8" transpose_y="3" transpose_z="0">
      <input>
        <e type="operand">c</e>
        <e type="function" args="1">f.1</e>
        <e type="operand">3</e>
        <e type="operand">π</e>
        <e type="operator" args="2">*</e>
        <e type="operator" args="1">-</e>
        <e type="operand">3</e>
        <e type="operand">π</e>
        <e type="operator" args="2">*</e>
        <e type="operand">100</e>
        <e type="function" args="4">Hatch</e>
        <e type="operand">φ</e>
        <e type="function" args="1">f.2</e>
        <e type="operand">3</e>
        <e type="operand">π</e>
        <e type="operator" args="2">*</e>
        <e type="operator" args="1">-</e>
        <e type="operand">3</e>
        <e type="operand">π</e>
        <e type="operator" args="2">*</e>
        <e type="operand">50</e>
        <e type="function" args="4">Hatch</e>
        <e type="operand">y</e>
        <e type="function" args="1">f.3</e>
        <e type="operand">4</e>
        <e type="operator" args="1">-</e>
        <e type="operand">4</e>
        <e type="operand">200</e>
        <e type="function" args="4">Hatch</e>
        <e type="operand">3</e>
        <e type="operand">1</e>
        <e type="function" args="5">sys</e>
      </input>
    </plot>
  </region>
  <region id="35" left="612" top="2025" width="136" height="30" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">t.3</e>
        <e type="operand">t.2</e>
        <e type="operator" args="2">-</e>
      </input>
      <result action="numeric">
        <e type="operand">3.097</e>
        <e type="operand" style="unit">s</e>
        <e type="operator" args="2">*</e>
      </result>
    </math>
  </region>
  <region id="36" left="621" top="2277" width="99" height="31" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2">
      <input>
        <e type="operand">t.4</e>
        <e type="operand">0</e>
        <e type="function" args="1">time</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="37" left="54" top="2286" width="111" height="24" color="#804000" bgColor="#ffffff" fontSize="10">
    <text lang="spa">
      <p>Fill Example</p>
    </text>
  </region>
  <region id="38" left="54" top="2322" width="496" height="160" color="#000000" bgColor="#ffffff" fontSize="10">
    <plot grid="false" type="2d" render="lines" scale_x="2.70873081310393" scale_y="1.09246530826429" scale_z="2.01408156738282" rotate_x="0" rotate_y="0" rotate_z="0" transpose_x="8" transpose_y="3" transpose_z="0">
      <input>
        <e type="operand">c</e>
        <e type="function" args="1">f.1</e>
        <e type="operand">φ</e>
        <e type="function" args="1">f.2</e>
        <e type="operand">3</e>
        <e type="operand">π</e>
        <e type="operator" args="2">*</e>
        <e type="operator" args="1">-</e>
        <e type="operand">3</e>
        <e type="operand">π</e>
        <e type="operator" args="2">*</e>
        <e type="operand">400</e>
        <e type="function" args="5">Fill</e>
        <e type="operand">1</e>
        <e type="operand">1</e>
        <e type="function" args="3">sys</e>
      </input>
    </plot>
  </region>
  <region id="39" left="621" top="2466" width="136" height="30" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">t.4</e>
        <e type="operand">t.3</e>
        <e type="operator" args="2">-</e>
      </input>
      <result action="numeric">
        <e type="operand">2.141</e>
        <e type="operand" style="unit">s</e>
        <e type="operator" args="2">*</e>
      </result>
    </math>
  </region>
  <region id="40" left="54" top="2538" width="176" height="24" color="#804000" bgColor="#ffffff" fontSize="10">
    <text lang="spa">
      <p>Klein Bottle Example</p>
    </text>
  </region>
  <region id="41" left="369" top="2538" width="62" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2" decimalPlaces="2">
      <input>
        <e type="operand">a</e>
        <e type="operand">2.5</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="42" left="450" top="2538" width="62" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2" decimalPlaces="2">
      <input>
        <e type="operand">b</e>
        <e type="operand">1.5</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="43" left="540" top="2538" width="46" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2" decimalPlaces="2">
      <input>
        <e type="operand">c</e>
        <e type="operand">2</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="44" left="603" top="2538" width="46" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2" decimalPlaces="2">
      <input>
        <e type="operand">d</e>
        <e type="operand">3</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="45" left="657" top="2538" width="99" height="31" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2">
      <input>
        <e type="operand">t.5</e>
        <e type="operand">0</e>
        <e type="function" args="1">time</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="46" left="54" top="2583" width="268" height="73" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2" decimalPlaces="2">
      <input>
        <e type="operand">u</e>
        <e type="operand">v</e>
        <e type="function" args="2">S.1</e>
        <e type="operand">a</e>
        <e type="operand">b</e>
        <e type="operand">u</e>
        <e type="function" args="1">cos</e>
        <e type="operator" args="2">*</e>
        <e type="operator" args="2">+</e>
        <e type="bracket">(</e>
        <e type="operand">v</e>
        <e type="function" args="1">cos</e>
        <e type="operator" args="2">*</e>
        <e type="operand">a</e>
        <e type="operand">b</e>
        <e type="operand">u</e>
        <e type="function" args="1">cos</e>
        <e type="operator" args="2">*</e>
        <e type="operator" args="2">+</e>
        <e type="bracket">(</e>
        <e type="operand">v</e>
        <e type="function" args="1">sin</e>
        <e type="operator" args="2">*</e>
        <e type="operand">a</e>
        <e type="operand">u</e>
        <e type="function" args="1">sin</e>
        <e type="operator" args="2">*</e>
        <e type="operator" args="1">-</e>
        <e type="operand">3</e>
        <e type="operand">1</e>
        <e type="function" args="5">mat</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="47" left="369" top="2583" width="268" height="71" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2" decimalPlaces="2">
      <input>
        <e type="operand">u</e>
        <e type="operand">v</e>
        <e type="function" args="2">S.2</e>
        <e type="operand">a</e>
        <e type="operand">b</e>
        <e type="operand">u</e>
        <e type="function" args="1">cos</e>
        <e type="operator" args="2">*</e>
        <e type="operator" args="2">+</e>
        <e type="bracket">(</e>
        <e type="operand">v</e>
        <e type="function" args="1">cos</e>
        <e type="operator" args="2">*</e>
        <e type="operand">a</e>
        <e type="operand">b</e>
        <e type="operand">u</e>
        <e type="function" args="1">cos</e>
        <e type="operator" args="2">*</e>
        <e type="operator" args="2">+</e>
        <e type="bracket">(</e>
        <e type="operand">v</e>
        <e type="function" args="1">sin</e>
        <e type="operator" args="2">*</e>
        <e type="operand">d</e>
        <e type="operand">u</e>
        <e type="operator" args="2">*</e>
        <e type="operand">3</e>
        <e type="operand">1</e>
        <e type="function" args="5">mat</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="48" left="54" top="2664" width="262" height="67" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2" decimalPlaces="2">
      <input>
        <e type="operand">u</e>
        <e type="operand">v</e>
        <e type="function" args="2">S.3</e>
        <e type="operand">c</e>
        <e type="operand">c</e>
        <e type="operand">u</e>
        <e type="function" args="1">cos</e>
        <e type="operator" args="2">*</e>
        <e type="operator" args="2">-</e>
        <e type="operand">v</e>
        <e type="function" args="1">sin</e>
        <e type="operator" args="2">+</e>
        <e type="operand">v</e>
        <e type="function" args="1">cos</e>
        <e type="operand">d</e>
        <e type="operand">u</e>
        <e type="operator" args="2">*</e>
        <e type="operand">3</e>
        <e type="operand">1</e>
        <e type="function" args="5">mat</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="49" left="369" top="2664" width="290" height="73" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2" decimalPlaces="2">
      <input>
        <e type="operand">u</e>
        <e type="operand">v</e>
        <e type="function" args="2">S.4</e>
        <e type="operand">c</e>
        <e type="operand">c</e>
        <e type="operand">v</e>
        <e type="function" args="1">cos</e>
        <e type="operator" args="2">+</e>
        <e type="bracket">(</e>
        <e type="operand">u</e>
        <e type="function" args="1">cos</e>
        <e type="operator" args="2">*</e>
        <e type="operator" args="2">+</e>
        <e type="operand">v</e>
        <e type="function" args="1">sin</e>
        <e type="operand">d</e>
        <e type="operand">π</e>
        <e type="operator" args="2">*</e>
        <e type="operand">2</e>
        <e type="operand">v</e>
        <e type="function" args="1">cos</e>
        <e type="operator" args="2">+</e>
        <e type="bracket">(</e>
        <e type="operand">u</e>
        <e type="function" args="1">sin</e>
        <e type="operator" args="2">*</e>
        <e type="operator" args="2">+</e>
        <e type="operand">3</e>
        <e type="operand">1</e>
        <e type="function" args="5">mat</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="50" left="54" top="2745" width="175" height="26" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2">
      <input>
        <e type="operand">U</e>
        <e type="operand">0</e>
        <e type="operand">π</e>
        <e type="operand">20</e>
        <e type="function" args="3">LinSpace</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="51" left="369" top="2745" width="191" height="26" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2">
      <input>
        <e type="operand">V</e>
        <e type="operand">0</e>
        <e type="operand">2</e>
        <e type="operand">π</e>
        <e type="operator" args="2">*</e>
        <e type="operand">20</e>
        <e type="function" args="3">LinSpace</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="52" left="54" top="2790" width="234" height="113" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2">
      <input>
        <e type="operand">K</e>
        <e type="operand">u</e>
        <e type="operand">v</e>
        <e type="function" args="2">S.1</e>
        <e type="operand">U</e>
        <e type="operand">V</e>
        <e type="function" args="3">MeshPlot</e>
        <e type="operand">u</e>
        <e type="operand">v</e>
        <e type="function" args="2">S.2</e>
        <e type="operand">U</e>
        <e type="operand">V</e>
        <e type="function" args="3">MeshPlot</e>
        <e type="operand">u</e>
        <e type="operand">v</e>
        <e type="function" args="2">S.3</e>
        <e type="operand">U</e>
        <e type="operand">V</e>
        <e type="function" args="3">MeshPlot</e>
        <e type="operand">u</e>
        <e type="operand">v</e>
        <e type="function" args="2">S.4</e>
        <e type="operand">U</e>
        <e type="operand">V</e>
        <e type="function" args="3">MeshPlot</e>
        <e type="operand">4</e>
        <e type="operand">1</e>
        <e type="function" args="6">sys</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="53" left="369" top="2790" width="242" height="223" color="#000000" bgColor="#ffffff" fontSize="10">
    <plot type="3d" render="lines" scale_x="0.969973013342247" scale_y="0.969973013342247" scale_z="0.969973013342247" rotate_x="-838" rotate_y="388" rotate_z="0" transpose_x="-2" transpose_y="-48" transpose_z="0">
      <input>
        <e type="operand">K</e>
      </input>
    </plot>
  </region>
  <region id="54" left="621" top="2979" width="136" height="30" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">t.5</e>
        <e type="operand">t.4</e>
        <e type="operator" args="2">-</e>
      </input>
      <result action="numeric">
        <e type="operand">3.673</e>
        <e type="operand" style="unit">s</e>
        <e type="operator" args="2">*</e>
      </result>
    </math>
  </region>
  <region id="55" left="54" top="3006" width="60" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2">
      <input>
        <e type="operand">Alvaro</e>
      </input>
    </math>
  </region>
</regions>