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      <title>Foreground - Ground Fog Parameters</title>
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      <div class="title_topic5" id="xps10_pagetitle">Foreground - Ground Fog Parameters</div>
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               <p class="para_th">Parameter</p>
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               <p class="para_th">Description</p>
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               <p class="para_td">Color</p>
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               <p class="para_td">An option that opens a color palette. Use the palette controls to mix the color that you want to simulate the fog effects.</p>
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               <p class="para_td">Point</p>
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               <p class="para_td">Choosing the Point button opens a Point Constructor dialog that allows you to specify the location for the reference point of the ground plane vector. Fog only exists above the ground plane.</p>
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               <p class="para_td">Normal</p>
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               <p class="para_td">Choosing the Normal button opens a Vector Constructor dialog that allows you to specify the &quot;up&quot; vector. The up vector indicates the direction for the attenuation of the fog above the ground plane.</p>
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               <p class="para_td">Distance</p>
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               <p class="para_td">Specifies the distance in World Coordinates at which fog completely obscures any objects in the scene. At closer distances the fog effects taper off exponentially. Fog Distance can be any positive value.</p>
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               <p class="para_td">Height</p>
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               <p class="para_td">Determines the rate of decrease for the fog effects. The larger the values in this field the more fog is visible at greater distances from the ground plane. Negative or zero values produce the same effects as the Fog foreground option.</p>
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