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      <title>Overview</title>
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      <div class="title_topic2" id="xps10_pagetitle">Overview</div>
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               <p class="para_td"><a class="links" href="javascript:void(0)" onclick="top.openFile('rapidprototyping/introduction.html');return(false);">Overview</a></p>
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               <p class="para_td">How To</p>
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               <p class="para_td"><a class="links" href="javascript:void(0)" onclick="top.openFile('rapidprototyping/rp_menu.html');return(false);">Options</a></p>
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               <p class="para_td"><a class="links" href="javascript:void(0)" onclick="top.openFile('rapidprototyping/error_mess.html');return(false);">Related Topics</a></p>
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      </table><br><p class="para_topic">The <b class="uiTerm">STL</b> option produces an output file, which complies with 3D Systems SLA interface requirements. To access the <b class="uiTerm">STL</b> option, perform the following while running NX:
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            <p class="para_item">Choose<b class="uiTerm"> File&rarr;Export&rarr;STL</b> from the module's main menu.
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      <p class="para_topic">The system then displays the main <b class="uiTerm">Rapid Prototyping</b> menu.
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                  <p class="para_note_body">The coordinates of the output triangle vertices as found in the operating system output file, are relative to the WCS. Some rapid prototyping machines require that the geometry reside in positive coordinate space. If you are using one of these machines, set the current WCS before using this interface to satisfy this condition.</p>
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      <div class="title_division">Flow of user interaction</div>
      <p class="para_division">The user interaction for the <b class="uiTerm">STL</b> option is as follows:
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            <p class="para_item">Set the desired options from the menu.</p>
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            <p class="para_item">Enter a file name for the output file.</p>
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            <p class="para_item">For binary output type files, enter any desired file header information.</p>
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            <p class="para_item">Choose the desired surfaces and solids using the <b class="uiTerm">Class Selection</b> dialog box.
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            <p class="para_item">If <b class="uiTerm">Auto Normal Generation</b> is on, and you have selected a surface in step 4, select a base surface and correctly orient its normal.
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