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      <title>Model Compare - Basis for Classifications</title>
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      <div class="title_topic2" id="xps10_pagetitle">Model Compare - Basis for Classifications</div>
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               <p class="para_td">Overview</p>
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               <p class="para_td"><a class="links" href="javascript:void(0)" onclick="top.openFile('nx_analysis/anl_mdlcompare_proc.html');return(false);">How To</a></p>
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               <p class="para_td"><a class="links" href="javascript:void(0)" onclick="top.openFile('nx_analysis/anl_mdlcompare_dialog.html');return(false);">Options</a></p>
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               <p class="para_td">Related Topics</p>
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               <p class="para_th">Unrelated Parts</p>
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               <p class="para_th">Related Parts</p>
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               <p class="para_th">Edges</p>
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               <p class="para_td">Identical Edges</p>
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               <p class="para_td">If the end points of two edges match and their underlying curves exactly coincide, they are classified as &quot;Identical.&quot;</p>
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               <p class="para_td">Changed Edges</p>
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               <p class="para_td">All non-identical edges are classified as &quot;Changed.&quot;</p>
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               <p class="para_td">If one edge curve is a portion of a curve on the other edge being matched, they are non-identical and are classified &quot;Changed.&quot;</p>
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               <p class="para_td">Unique Edges</p>
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               <p class="para_td">Not Applicable.</p>
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               <p class="para_td">Any non-identical, non-changed edge is classified as &quot;Unique.&quot;</p>
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               <p class="para_th">Faces</p>
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            <td bgcolor="#c0c0c0" colspan="1" rowspan="1"><a name="analysis_anl_mdlcompare_basis_identical_faces"></a><p class="para_td">Identical Faces</p>
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               <p class="para_td">Two faces are classified as &quot;Identical&quot; and a comparison generated if their underlying surfaces are exactly identical and at least one of the following is true:</p>
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                     <p class="para_item">All trimming edges are identical.</p>
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                  <li>
                     <p class="para_item">All external trimming edges are identical.</p>
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                  <li>
                     <p class="para_item">At least one external trimming edge is identical.</p>
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               <p class="para_td">Changed Faces</p>
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               <p class="para_td">All non-identical faces are classified as &quot;Changed.&quot;</p>
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               <p class="para_td">If the geometry of the related faces in the two parts is not identical, they are classified as &quot;Changed.&quot; </p>
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               <p class="para_td">Unique Faces</p>
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               <p class="para_td">Not Applicable.</p>
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               <p class="para_td">All non-identical, non-changed faces are classified as &quot;Unique.&quot;</p>
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               <p class="para_th">Features</p>
               <p class="para_th">Features are classified depending on the comparison of objects created by them. Suppressed features are not compared. Only objects that exist in the result part are compared.</p>
               <p class="para_th">Features are compared only for related parts.</p>
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               <p class="para_td">Identical Features</p>
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               <p class="para_td">Not Applicable.</p>
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               <p class="para_td">Two corresponding features are classified as &quot;Identical&quot; if all the related objects and expressions are exactly the same.</p>
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               <p class="para_td">Changed Features</p>
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               <p class="para_td">Not Applicable.</p>
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               <p class="para_td">Two corresponding non-identical features are classified as &quot;Changed&quot; if at least one of the related objects or one of the related expressions is &quot;Changed.&quot;</p>
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               <p class="para_td">Unique Features</p>
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               <p class="para_td">Not Applicable.</p>
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            <td bgcolor="#f4f4f4" colspan="1" rowspan="1">
               <p class="para_td">All non-identical, non-changed features are classified as &quot;Unique.&quot;</p>
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               <p class="para_th">Expressions</p>
               <p class="para_th">Expressions with the same names are compared. Expressions are compared only for related parts. </p>
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               <p class="para_td">Identical Expressions</p>
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               <p class="para_td">Not Applicable.</p>
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            <td bgcolor="#f4f4f4" colspan="1" rowspan="1">
               <p class="para_td">Two expressions with the same expression names are classified as &quot;Identical&quot; if their values are identical.</p>
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               <p class="para_td">Changed Expressions</p>
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               <p class="para_td">Not Applicable.</p>
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            <td bgcolor="#f4f4f4" colspan="1" rowspan="1">
               <p class="para_td">Two expressions with the same expression names are classified as &quot;Changed&quot; if their values are not identical.</p>
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               <p class="para_td">Unique Expressions</p>
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               <p class="para_td">Not Applicable.</p>
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            <td bgcolor="#f4f4f4" colspan="1" rowspan="1">
               <p class="para_td">All non-identical, non-changed expressions are classified as &quot;Unique.&quot;</p>
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