Exact symbolic corner addresses
A :: upper-left :: [x−8, y−8, 0, 0]
B :: upper-right :: [x+8, y+8, 0, 0]
C :: lower-left :: [0, 0, x−8, y−8]
D :: lower-right :: [0, 0, x+8, y+8]
0 :: pinned :: [v,w,x,y,z]
The two-coordinate canvas is a projection of these four-component corner records. The center observer's five symbols stay fixed. No dimensional equivalence is assumed between the four corner components and the five pinned labels.
The input chart defines 370 address colors and hue angles, not a physical spectrum or independent nm readings. For demonstration only, this page maps address z to 380 + (z−1)×370/369 nm. This mapping is explicitly a simulation convention; six-color mode continues to use the source's six RGB permutations independently of the illustrative nm value.