Think of tags as like a book index where you find words and which pages they are on, the same principle applies here. Although it's taken a stage further so it might not be the word, but the subject, so for example if you're looking for things to do with fractal gradients for example. A tag may bring back posts with gradient files, as well as posts that discuss gradients, or tutorials about them.

shapes group variation waveblur

Shapes

Variations that ignore the input and generate specific shapes. Often called “blurs” because they create a blur effect when used on the same transform with other variations.

julia group variation julian2

Julia

Variations based on polynomial Julia sets. For escape time fractals, the formula is z → z^n + c. For flames, the mapping is reversed and the “+ c” part is done by the affine transform, so these variations basically take the root of the input taken as a complex number, returning one of the results at random.

blurry group radial blur variation sample

Blurry

Variations that add different types of blurriness. Unlike blur transforms, they do not ignore their inputs or create shapes by themselves. Most are best used in conjunction with other variations on the same transform, although a few have an incorporated linear so this is not needed.

attractors group clifford variation sample

Attractors

These variations use the formulas for strange attractors. They are mostly normal variations, not blurs, and will produce the actual attractor when used on a single transform by themselves with no affine transforms, as is done with all of the examples shown here.