Differences between 4.0 and 4.0.6

• 4.0 supports depth-map generation, 4.0.6 does not
• 4.0.6 supports animation, 4.0 does not
• 4.0.6 Guide seems to better reflect both programs, but not always
• 4.0.6 uses both adaptive and jittered antialiasing by default
• map linear becomes map planar in 4.0.6
• Command-line -W parameters are reversed (x y x y in 4.0, x x y y in 4.0.6)
• Substantial rewrite in 4.0.6 (more code in libraries)

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