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      <title>X-Axis, Y-Axis</title>
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      <div class="title_topic4" id="xps10_pagetitle">X-Axis, Y-Axis</div>
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      <p class="para_topic"> This option allows you to select two intersecting lines to determine the X and Y axes of the coordinate system. In the next figure, lines L1 and L2 selected where shown, define a coordinate system. Their intersection point is the origin.</p>
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      <p class="para_topic"> Two Lines Specify a Coordinate System</p>
      <p class="para_topic"> First, select a line that will be the X axis of the coordinate system. The positive X direction is towards the end point closest to the position indicator.</p>
      <p class="para_topic"> Next, the system prompts you for a line that will determine the Y axis. The Y axis will be perpendicular to the X axis and will lie in the plane containing the two lines. The end point closer to the position indicator is in the positive Y direction. The origin is the intersection point of the lines.</p>
      <p class="para_topic"> After you select the axes, the system exits the CSYS Constructor.  </p>
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