P
P
r
r
o
o
d
d
u
u
c
c
t
t
s
s
B
B
l
l
o
o
g
g
D
D
i
i
a
a
g
g
n
n
o
o
s
s
i
i
s
s
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Colorimetry
Visual language
Proportions & hierarchy
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