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      <title>Options</title>
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      <div class="title_topic3" id="xps10_pagetitle">Options</div>
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      <div class="title_division">Sew surfaces automatically</div>
      <p class="para_division">If this option is turned on, the translator attempts to sew the imported surfaces together where they have edges common to within a given tolerance upper bound.</p>
      <div class="title_division">Layer default for level 0</div>
      <p class="para_division">The <b class="uiTerm">Layer Default for Level 0</b> option allows you to specify which NX layer is to be assigned to entities specified in the input STEP file as being on Layer 0 in the originating system.
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      <p class="para_division">Corresponds to default file option ZERO_LAYER_DEFAULT.</p>
      <p class="para_division">&nbsp;In addition STEP layers will map to NX layers as follows:</p>
      <p class="para_division">STEP layer 0&rarr;user input</p>
      <p class="para_division">STEP layers 1&ndash;256&rarr;NX layers 1&ndash;256</p>
      <p class="para_division">STEP layers 257&ndash;512&rarr;NX layers 1&ndash;256</p>
      <p class="para_division">STEP layers 513&ndash;768&rarr;NX layers 1&ndash;256</p>
      <p class="para_division">etc.</p>
      <p class="para_division">(for example, STEP layer 257&rarr;NX layer 1</p>
      <p class="para_division">STEP layer 258&rarr;NX layer 2)</p>
      <p class="para_division">Layer Default for Level 0: 1</p>
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