Square Limit
From Ultrafractal Wiki
Square Limit is a Transformation in sam.ufx.
This transformation reproduces the tiling pattern used by Escher in his "Square Limit" work. It works exactly like Octagon Limit. See the latter for a little tutorial about how to start an image with these two transformations. All the parameters are the same.
Gradient for Octagon Limit is a coloring especially designed for Octagon Limit and Square Limit.
Octagonal Gradient can display a squarry gradient that might be great to soften the edges of the square, for instance. Just set the "Angle" parameter to 45.
