Default UV Layout preset with atlas texture included in SB_Strokes asset. But you can always create your own layout with mapped texture:
Layout object functions as a mapping instruction for Cards UV Map. It’s a simple plane or set of faces with UV map on it and a bunch of UV Islands of rectangular shape.
Cards UV Map are automatically snapped to the nearest UV island according to the ****length-to-radius aspect ratio for each spline.
For more info check YouTube tutorial.