photons x
Emits x photon particles per luminaire
Photon mapping disabled by default (x = 0)

maxbounces x
Limits the maximum number of bounces for photons around the scene

displayPhotons
This command produces a visualization of the photon map (disabled by default)

quads c1 c2 c3 c4
Creates a quad with corners c1, c2, c3, c4 (works like tri c1 c2 c3, using vertices in maxverts)