Maximum period (between 3 and 25):

Rainbow
Single colour. Click to select colour:

Choose a point (X,Y).
X = Y =

Center on (X,Y)
Draw the last (between 3 and 100): steps of the orbit
Draw Limit for (X,Y)

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Advanced Settings

Epsilon (between 0.000001 and 0.05):
Maximum iterations (between 100 and 1000000):