A blot of ink is placed on the grid, completely black with pigment. A random walker is placed on the ink blot, and as it steps it smears the ink on the page. But every step, it loses some color, getting lighter, leaving a fading trail behind it. When the walker steps on any filled cell, running into its own trail, it takes on that color and smears around the ink even more.
This creates chaotic gradients from lighter areas to darker areas as the walker smears ink, steps over itself, and eventually covers the whole page. This creates beautiful and intricate patterns that can be fine-tuned to bring out different styles.
# of Walkers will control how many walkers there are to smear the ink, and more walkers will fill up the grid faster, but affects the overall picture. Selecting Use Suggested will auto-scale with the grid size.
# of Ink Blots, similarly, controls how many full-black cells (drops of ink) there are at the beginning, giving more pools of dark color for the walkers to smear. Selecting Keep Blots < Walkers reduces random black specks. If there are more blots than walkers, some black cells might be avoided and break up the smoothness of the gradient.
Adjust to Pure White will make the brightest color (even if it is light gray) be drawn as white, and all other colors will scale respectively, making the image have maximal contrast.
Color Falloff Rate controls how quickly the walker loses color as its trail fades. Higher values means the walker loses ink faster. Going above 100% means the entire canvas might not end up colored.
Min Walker Color affects the lightest pigment the walker can spread. If it is 0%, the walker can lose all color, needing to re-dip into ink. If it is higher, the walker can never go lighter than that color.
Only Take On Darker Colors means that the walker will not change color if it steps on an area with lighter ink. E.g., a dark-gray walker steps on a nearly-white square, and it will remain dark-gray if this is selected, but it will become nearly-white if this is unselected.
Turn Change controls how likely the walker is to choose a new direction every step.
"Step Twice" Chance controls how likely the walker is to take two steps before drawing its color, which can allow the walker to skip squares instead of making a perfectly connected trail.
Movement Pattern controls how the walker moves, if Allow Diagonal Steps is turned on. "X% Diag" and "X% Orthog" is the percentage of steps that will be diagonal versus up/down/left/right.