'Rotated Warped Tilez' (RWT A and B)' series: Paint.NET-based series made with almost the same filters and method as WSI-s, but instead of polar inversion (and polarcoordinates), autolayering and layer rotation (by 10/20/30/45/90 degrees most often) are so more frequently used, always with layering lens that drastically changes output color (xor, or multiply or difference are good examples, 'darken' and 'lighten' and 'screen' are bad ones) combined with seamless move; the sharp color difference seamlessly moved on the centre gives the pictures a typical concave rectangular/polygonal central structure . "RWT A series" Warping applied much less times than for B series. The central geometric shape is rather a result of layer distraction than the black/white margin of 'Multiview Warp' filter rendered in "primary/secondary color" mode. These pieces have a rather obvious rotational symmetry, not just axial; they generally have a more raw look (at least they had untill I started to massively polish them in may-june, 2014), but sometimes this is what I looking for (and, although it is not a necessary by rule, their central starry/steering wheel/gear shape in general is bigger because of the relative lack of iterated warping). * "RWT B series" : The central shape is the result of warp margines (moved to the center by seamless move plugin filter) and rotations together, these pieces are more rectangular and can be more tiled in look, the central shape is lesser, axial symmetry is more obvious than rotational. ** Remark: There is no sharp border between WSI, RWT A and RWT B series. A mathematically rigorous definition can't be given, because I use almost the same filters for them, but not by the same quantity. The main factor is the ratio, or - because process is quite random sometimes - probability of using a given filter. But this of course can be change from 0 to 100 percent for each filter for every pic.