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    <meta content='Figure23.3bExponentialFogVisibility40.x3d' name='title'/>
    <meta content='Figure 23.3, The VRML 2.0 Sourcebook, Copyright [1997] By Andrea L. Ames, David R. Nadeau, and John L. Moreland' name='creator'/>
    <meta content='http://www.wiley.com/legacy/compbooks/vrml2sbk/ch23/23fig03b.htm' name='reference'/>
    <meta content='Don Brutzman' name='translator'/>
    <meta content='22 September 2000' name='created'/>
    <meta content='15 January 2011' name='modified'/>
    <meta content='An exponential-fog world with a visibility range of 40m. Compare Figures 23.3a, 3b and 3c.' name='description'/>
    <meta content='Figure23.3aExponentialFogVisibility100.x3d' name='reference'/>
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