bitmap
black
blur
bubbles
circle
comic
density
diffuse
diffusion
dispersion
dot
dots
dotted
dtp
effect
fade
geometric
gradation
gradient
half
halftone
horizontal
linear
monochrome
monocrome
mosaic
pixellation
pixels
pointillism
pointillist
polka
polkadots
popart
prepress
regular
repeatable
screen
screentone
seamless
speckle
spots
spread
sprinkle
square
stipple
stippling
tone