With this filter, your image (active layer or selection) looks like
a kaleidoscope. This filter duplicates your image in many copies, more
or less dimmed and split, and puts them around the center of the image.
12.5.2. Activate the filter
This filter is found in the image window menu under
Filters → Map → Illusion.
12.5.3. Options
Figure 16.251. “Illusion” filter options
Divisions
That's the number of copies you want to apply to image. This
value varies from -32 to 64. Negative values invert
kaleidoscope rotation.
Modes
You have two arrangement modes for copies in image:
Figure 16.252.
From left to right: original image, mode 1, mode 2, with
Divisions=4
