F3 + V = load all visible chunks
F3 + O = shader options
F3 + R = reload shaders

# Chunk debug keys, see system property "chunk.debug.keys"
F3 + E = chunk path
F3 + L = smart cull
F3 + U = capture frustum
Alt + F3 + U = capture shadow frustum
Shift + F3 + U = release frustum
F3 + V = chunk visibility
