Blur Dialog Box

The blocky blur, which is faster
to perform than the fuzzy blur, looks kind of
"digital". A block of pixels is averaged to
reach a final color, and then that whole area is replaced
with that one color.
- The fuzzy blur, on the other hand, blurs each pixel
individually by taking the average color of a square
block of pixels centered on the particular pixel being
blurred. This type of blur produces nice-looking results,
but takes a long time on large images. The time it takes
to perform the blur is proportional to the square
of the blur amount.
- If "do not modify transparent pixels" is
checked, then transparent pixels (remember, UltraPaint
treats pitch black as the transparent color) will not be
included in the aforementioned pixel averaging process,
nor will they be modified.