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5 4/6/98 - fix 30 arcsec dem file processing
7 4/6/98 - incorporate autoconf/automake build system
9 1/10/98 - Split areas into smaller tiles
11 1/14/98 - Don't create shared corners or edges if one already exists.
13 1/14/98 - Reassemble triangles using only body, shared corners, and
16 1/19/98 - Retro-fit tri2obj to use shared normals rather than regenerating
17 normals for shared vertices.
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24 1/12/98 - Try reversing cw-wound strips rather than calling glFrontFace()
27 gnuplot> set label "1" at 1,1
28 gnuplot> set label "2" at 2,2
32 1/21/98 - Generate an elevation quad tree.
34 1/12/98 - Generate a face adjacency matrix
36 1/21/98 - Remove internal shared edges and corners that are not needed
37 after an area is generated.