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      <title>DSYM</title>
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      <div class="title_refTopic" id="xps10_pagetitle">DSYM </div>
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      <h4 class="refClassification">Dihedral Symmetry Option in Cyclic Symmetry </h4>
      <p class="para_refTopic">Provides for either one or two planes of overall symmetry in DIH-type cyclic symmetry problems. </p>
      <div class="title_refCategory">Format: </div>
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      <div class="title_refCategory">Examples: </div>
      <div class="refCategoryContent"><pre class="indent">DSYM=AS</pre></div>
      <div class="title_refCategory">Describers:</div>
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                     <p class="para_th"><b class="uiTerm">Describer </b></p>
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                     <p class="para_th"><b class="uiTerm">Meaning </b></p>
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                     <p class="para_td">S, A </p>
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                     <p class="para_td">The problem is assumed to be symmetrical (S) or antisymmetrical (A) with respect to the plane containing Side 1 of segment 1. </p>
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                     <p class="para_td">SS, SA, AS, AA </p>
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                     <p class="para_td">The problem is assumed to be symmetrical (or antisymmetrical) with respect to the plane containing Side 1 of segment 1 (denoted by the first symbol), and also with respect to a plane perpendicular to Side 1 (denoted by the second symbol). </p>
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