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All keys are case-sensitive.

Key Effect
b Toggle wall textures
c Toggle reflection
d Toggle refraction
Space Toggle mobile rotation
jk Slow down / Speed up mobile
W A S D R F Move camera
1 3 Rotate camera
U Reorient camera
p Increase spotlight angle
P Decrease spotlight angle
m Use Gouraud shading
M Use flat shading
n Use Phong shading
l Toggle light source
L Toggle light source guide lines