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      <header alignment="Center" color="#a9a9a9">&amp;[DATE] &amp;[TIME] - &amp;[FILENAME]</header>
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      <p bold="true">2D plot constrained</p>
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        <e type="operand">#</e>
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        <e type="operand">#</e>
        <e type="operand">#</e>
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        <e type="operand">#</e>
        <e type="operand">#</e>
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        <e type="operand">#</e>
        <e type="operand">#</e>
        <e type="operator" args="2">≥</e>
        <e type="operand">1</e>
        <e type="operand">4</e>
        <e type="function" preserve="true" args="6">mat</e>
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        <e type="operand">#</e>
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        <e type="operand">#</e>
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      <p bold="true">Fill 2D region</p>
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    <math>
      <input>
        <e type="operand">x</e>
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        <e type="operand">18</e>
        <e type="operand">2</e>
        <e type="operand">x</e>
        <e type="operator" args="2">*</e>
        <e type="operator" args="2">-</e>
        <e type="operand">3</e>
        <e type="operator" args="2">/</e>
        <e type="operator" args="2">:</e>
        <e type="operand">x</e>
        <e type="function" args="1">f2</e>
        <e type="operand">12</e>
        <e type="operand">4</e>
        <e type="operand">x</e>
        <e type="operator" args="2">*</e>
        <e type="operator" args="2">-</e>
        <e type="operator" args="2">:</e>
        <e type="operand">x</e>
        <e type="function" args="1">f3</e>
        <e type="operand">x</e>
        <e type="operand">2</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" preserve="true" args="5">line</e>
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        <e type="operand">N</e>
        <e type="operand">500</e>
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      <p>Density of random</p>
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    <math>
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        <e type="operand">xmax</e>
        <e type="operand">6</e>
        <e type="operator" args="2">:</e>
        <e type="operand">xmin</e>
        <e type="operand">1</e>
        <e type="operator" args="2">:</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">line</e>
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    <math>
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        <e type="operand">ymax</e>
        <e type="operand">6</e>
        <e type="operator" args="2">:</e>
        <e type="operand">ymin</e>
        <e type="operand">1</e>
        <e type="operator" args="2">:</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">line</e>
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    <math>
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        <e type="operand">space_x</e>
        <e type="operand">xmax</e>
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        <e type="bracket">(</e>
        <e type="operator" args="2">:</e>
        <e type="operand">space_y</e>
        <e type="operand">ymax</e>
        <e type="operand">ymin</e>
        <e type="operator" args="2">-</e>
        <e type="bracket">(</e>
        <e type="operator" args="2">:</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">line</e>
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      <description active="true" position="Top" lang="eng">
        <p>A function that tests an arbitrary point for its membership in the critical region.</p>
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        <e type="operand">x</e>
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        <e type="function" args="2">Test</e>
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        <e type="function" args="1">f1</e>
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        <e type="bracket">(</e>
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        <e type="operand">x</e>
        <e type="function" args="1">f2</e>
        <e type="operator" args="2">≥</e>
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        <e type="operator" args="2">*</e>
        <e type="operand">y</e>
        <e type="operand">x</e>
        <e type="function" args="1">f3</e>
        <e type="operator" args="2">≥</e>
        <e type="bracket">(</e>
        <e type="operator" args="2">*</e>
        <e type="operator" args="2">:</e>
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        <e type="operand">spec</e>
        <e type="function" args="2">pts</e>
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        <e type="operand">1</e>
        <e type="operand">data</e>
        <e type="function" preserve="true" args="1">rows</e>
        <e type="function" preserve="true" args="2">range</e>
        <e type="operand">p</e>
        <e type="operand">i</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operand">a</e>
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        <e type="operand" style="string">Unest 'p' </e>
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        <e type="operand">1</e>
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        <e type="operand">2</e>
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        <e type="function" preserve="true" args="1">rows</e>
        <e type="function" preserve="true" args="2">range</e>
        <e type="operand">v</e>
        <e type="operand">v</e>
        <e type="operand">p</e>
        <e type="operand">j</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="function" preserve="true" args="2">stack</e>
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        <e type="operand">data</e>
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        <e type="operand">5</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="7">line</e>
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    <math fractionType="fraction">
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        <p>A routine that finds an array of N random pairs in the critical region.</p>
      </description>
      <input>
        <e type="operand">Pts</e>
        <e type="operand" style="string">the routine is a compressor</e>
        <e type="operand" style="string">it maintains density 'N' </e>
        <e type="operand" style="string">within the variable region</e>
        <e type="operand">i</e>
        <e type="operand">1</e>
        <e type="operand">N</e>
        <e type="function" preserve="true" args="2">range</e>
        <e type="operand">x</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="1">Random</e>
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        <e type="operand">xmin</e>
        <e type="operator" args="2">+</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operator" args="2">:</e>
        <e type="operand">y</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="1">Random</e>
        <e type="operand">space_y</e>
        <e type="operator" args="2">*</e>
        <e type="operand">ymin</e>
        <e type="operator" args="2">+</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operator" args="2">:</e>
        <e type="operand">1</e>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="function" args="2">Test</e>
        <e type="operator" args="2">-</e>
        <e type="operand">x</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="1">Random</e>
        <e type="operand">space_x</e>
        <e type="operator" args="2">*</e>
        <e type="operand">xmin</e>
        <e type="operator" args="2">+</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operator" args="2">:</e>
        <e type="operand">y</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="1">Random</e>
        <e type="operand">space_y</e>
        <e type="operator" args="2">*</e>
        <e type="operand">ymin</e>
        <e type="operator" args="2">+</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operator" args="2">:</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">line</e>
        <e type="function" preserve="true" args="2">while</e>
        <e type="operand">P</e>
        <e type="operand">i</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operand">x</e>
        <e type="operator" args="2">:</e>
        <e type="operand">P</e>
        <e type="operand">i</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operand">y</e>
        <e type="operator" args="2">:</e>
        <e type="operand">5</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="7">line</e>
        <e type="function" preserve="true" args="3">for</e>
        <e type="operand">P</e>
        <e type="operand">5</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="7">line</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
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    <math optimize="0" fractionType="fraction">
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        <e type="operand">a</e>
        <e type="operand">b</e>
        <e type="operand">c</e>
        <e type="function" args="3">spec</e>
        <e type="operand" style="string">.</e>
        <e type="operand">6</e>
        <e type="operand" style="string">#A0A0A0</e>
        <e type="operand">1</e>
        <e type="operand">3</e>
        <e type="function" preserve="true" args="5">mat</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="23" left="432" top="774" width="231" height="28" color="#000000" bgColor="#fff5ff" fontSize="10">
    <math fractionType="fraction">
      <input>
        <e type="operand">pts</e>
        <e type="operand">Pts</e>
        <e type="operand">a</e>
        <e type="operand">b</e>
        <e type="operand">c</e>
        <e type="function" args="3">spec</e>
        <e type="function" args="2">pts</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
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    <plot type="2d" render="lines" scale_x="2.14358881" scale_y="2.85311670611" scale_z="6.11590904484146" rotate_x="0" rotate_y="0" rotate_z="0" transpose_x="-69" transpose_y="-42" transpose_z="0">
      <input>
        <e type="operand">x</e>
        <e type="function" args="1">f1</e>
        <e type="operand">x</e>
        <e type="function" args="1">f2</e>
        <e type="operand">x</e>
        <e type="function" args="1">f3</e>
        <e type="operand">pts</e>
        <e type="operand">4</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="6">sys</e>
      </input>
    </plot>
  </region>
  <region id="25" top="1053" color="#000000" bgColor="#80ff80">
    <area single="true" collapsed="true" />
  </region>
</regions>