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      <title>Centerline Markers</title>
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      <div class="title_topic3" id="xps10_pagetitle">Centerline Markers</div>
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      <p class="para_topic"> When you use the Arc/Ellipse/Sphere Center option, small centerline markers display at the centers of each arc, ellipse, and circular and elliptical edge that you move the selection ball cursor over.</p>
      <p class="para_topic"> The purpose of the markers is to assist you in selecting an object based on its center. The system displays these markers when you pre-highlight these types of objects. It then automatically hides them at the end of the selection process.</p>
      <p align="center"><img align="bottom" src="graphics/com_com_pt_centerline.gif"></p>
      <p class="para_topic"> Centerline Marker</p>
      <p class="para_topic"> To display centerline markers, turn on Selection Pre-highlighting using Preferences&rarr;Selection.</p>
      <p class="para_topic"> Also, centerline markers display in the color specified in Preferences&rarr;Selection.</p>
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