anchor.diff:                  :make-axis-aligned-box
                   :axis-aligned-box-p
                   :axis-aligned-box-maxima
  -                :axis-aligned-box-minima)
  +                :axis-aligned-box-minima
  +                :copy-axis-aligned-box)
     (:shadow := :/=)
     (:nicknames :aabb)
     (:export :axis-aligned-box :axis-aligned-box-p :axis-aligned-box
  -           :maxima :minima :make
  +           :copy-axis-aligned-box :maxima :minima :make
              :from-aabbs := :/= :from-points :add-point
              :intersects-p :intersects-with-line3-p :intersects-with-ray3-p
              :intersects-with-line-segment-p))
  
positive.code:                 :make-line3
                  :line3-direction
                  :line3-origin
                  :line3-p)
    (:shadow := :/=)
    (:nicknames :line3)
    (:export :line3 :line3-p :origin :direction :make :transform-m3 :transform-q
             :closest-point :closest-line-points
             :distance-to-point :distance-squared-to-point
             :distance-to-line3 :distance-squared-to-line3))
  
  
negative.code:                 :line-segment3-p
                  :make-line-segment3
                  :line-segment3-end-point0
                  :line-segment3-offset
                  :copy-line-segment3)
    (:shadow := :/= :length :abs)
    (:nicknames :line-seg3)
    (:export :end-point0 :end-point1 :direction :line-segment3-p
             :copy-line-segment3 :make :make-from-point-offset := :/=
             :transform-m3 :transform-q :length-squared :length
             :distance-squared-to-line-seg3 :distance-to-line-seg3
             :distance-squared-to-ray3 :distance-to-ray3
             :distance-squared-to-line3 :distance-to-line3
             :distance-squared-to-point :distance-to-point
             :closest-line-segment-points :closest-ray-points
  