There are some things missing in the reference that comes with the
Processing software.

Processing 1.0.1:

Transform

pushMatrix()
scale()
popMatrix()
translate()
rotate()

Website reference:

Transform

applyMatrix()
popMatrix()
printMatrix()
pushMatrix()
resetMatrix()
rotate()
rotateX()
rotateY()
rotateZ()
scale()
translate()

Lights, Camera

Lights

ambientLight()
directionalLight()
lightFalloff()
lightSpecular()
lights()
noLights()
normal()
pointLight()
spotLight()
Camera
beginCamera()
camera()
endCamera()
frustum()
ortho()
perspective()
printCamera()
printProjection()

Coordinates

modelX()
modelY()
modelZ()
screenX()
screenY()
screenZ()

Material Properties

ambient()
emissive()
shininess()
specular()

I missed this bug when it first came in, but it's fixed now. Thanks for
calling it to our attention.