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      <title>Choosing Layers</title>
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      <div class="title_topic2" id="xps10_pagetitle">Choosing Layers</div>
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               <p class="para_td"><a class="links" href="javascript:void(0)" onclick="top.openFile('translatoruser/modify_setting.html');return(false);">Overview</a></p>
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               <p class="para_td">Options</p>
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               <p class="para_td"><a class="links" href="javascript:void(0)" onclick="top.openFile('translatoruser/modify_set_choose_vws.html');return(false);">Related Topics</a></p>
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      </table><br><p class="para_topic"><b class="uiTerm">Choosing Layers</b> is a very effective tool to allow you to eliminate unnecessary geometry from translation. Disabling layers which contain construction geometry or geometry, which is for reference, will reduce the amount of data translated and decrease confusion on the receiving end of the translation.
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      <p class="para_topic">The layers to be translated can be specified in the <b class="uiTerm">Layers</b> block in the <b class="uiTerm">Data to Export</b> tab page.
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      <p class="para_topic">You can select layers by typing in the layers, which you wish to translate. The default is layers 1&ndash;256 will select for translation on export and 1&ndash;9999999 will select for translation on import. You can select layers by entering a layer string with a maximum of 50 characters. Only the layers selected will be processed. The following set expressions illustrate how the menu will interpret user input.</p>
      <div class="title_division">Enable/Disable Layer</div>
      <p class="para_division"><b class="uiTerm">Enable/Disable Layers</b> allows you to specify which layers to turn off or on from processing. You can specify layers in ranges, separated by commas, by individual layers separated by commas, or by ranges specified with a hyphen before or after a number. The following examples will illustrate.
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                  <p class="para_td">Set Expression</p>
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                  <p class="para_td">Interpretation by Enable or Disable</p>
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                  <p class="para_td">1&ndash;10,20&ndash;30</p>
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                  <p class="para_td">Turn on or off layers 1&ndash;10 and 20&ndash;30</p>
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                  <p class="para_td">&ndash;8</p>
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                  <p class="para_td">Turn on or off layers 1&ndash;8</p>
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                  <p class="para_td">100&ndash;</p>
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                  <p class="para_td">Turn on or off layers 100&ndash;256</p>
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                  <p class="para_td">7</p>
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                  <p class="para_td">Turn on or off layer 7</p>
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                  <p class="para_td">*</p>
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                  <p class="para_td">Turn on or off all layers 1&ndash;256</p>
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      </table><br><div class="title_division">Advanced Settings</div>
      <p class="para_division">The <b class="uiTerm">Advanced Settings</b> options are unique for each translator. You can find all of the advanced settings available for each translator in <a class="links" href="javascript:void(0)" onclick="top.popUpPage('dataexchange/index.html?goto=dataexchange/title_page.html&vars=-aux,-home','linkInter','menubar=yes,status=yes,resizable=yes,toolbar=yes,scrollbars=yes,location=no,directories=no');return(false);">Data Exchange Help</a>.
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