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      <title>Default Lights Set</title>
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      <div class="title_topic6" id="xps10_pagetitle">Default Lights Set</div>
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      <p class="para_topic">Every new part includes a default set of lights for basic use, which are turned on when a new view is created. This default set consists of three lights, each with the word &quot;default&quot; in their name. If no lights are turned on and you click Apply or OK, the system turns on the Default Lights set to make sure no part is saved without a light source.</p>
      <p class="para_topic">The three default lights are:</p>
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               <p class="para_th">Light</p>
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               <p class="para_th">Description</p>
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               <p class="para_td">Default 1 Ambient</p>
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               <p class="para_td">An ambient light source with an intensity of 0.2.</p>
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               <p class="para_td">Default 2 Up-Right Dist</p>
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               <p class="para_td">A distant light source with an intensity of 1.0, fixed to observer and located just off your right shoulder.</p>
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               <p class="para_td">Default 3 Up-Left Dist</p>
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               <p class="para_td">A distant light source with an intensity of 1.0, fixed to observer and located just off your left shoulder.</p>
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      </table><br><div class="title_division">Editing and Deleting Default Lights</div>
      <p class="para_division">You can edit the default lights, but you cannot change their names or types. However, you cannot delete the lights because they are required to perform the 'Reset to Default Lights' operation. If you try to delete them, the system displays an error message, cancelling the operation.</p>
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