The Fracture paint rollout contains parameters for the “fracture paint” fracture mode.
Amount: controls how much to offset stroke meshes generated after the first iteration (ie, iteration 2 and above, unless symmetrical mode enabled - see below), along their vertex normals.
Symmetrical: when enabled, all stroke iterations will be divided into two groups, and each group will be offset in the opposite direction of the other. So if your iteration count is 2 and your offset amount if 1, one stroke mesh will be offset by 0.5 units along its surface normals, and the other by -0.5 units along its surface normals.
Noise phase variation: phase variation applied to any extra iterations of stroke meshes that are generated, based on the iterations parameter.