This section contains attributes to control the Multi Streaks shading for Paint Effects strokes. These attributes only apply if your hair output includes Paint Effects (see Create your own hair on surfaces).
Multi Streaks is the number of added sub hairs for each hair in a clump. These hairs will share the same shape and shading as the base hair they are derived from. They are created at render time and are simple duplicates, and therefore do not take up any shape computation. This allows you to have a great number of (Paint Effects) tubes and yet render them in a reasonable amount of time.
The maximum offset for added hairs relative to the clump width.
The maximum offset for added tubes relative to the clump width at the tube tip.
Render times can be much faster if you share the same illumination for each hair in a Multi Streak. If the Multi Streak spread is relatively large or self shadowing between hairs within a Multi Streak group is desired then Light Each Hair should be turned on. Also turning this on could avoid popping artifacts in situations with moving hard-edged shadows.