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5 1/10/98 - Split areas into smaller tiles
7 1/14/98 - Don't create shared corners or edges if one already exists.
9 1/14/98 - Reassemble triangles using only body, shared corners, and
12 1/19/98 - Retro-fit tri2obj to use shared normals rather than regenerating
13 normals for shared vertices.
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20 1/12/98 - Try reversing cw-wound strips rather than calling glFrontFace()
23 gnuplot> set label "1" at 1,1
24 gnuplot> set label "2" at 2,2
28 1/21/98 - Generate an elevation quad tree.
30 1/12/98 - Generate a face adjacency matrix
32 1/21/98 - Remove internal shared edges and corners that are not needed
33 after an area is generated.