In the shape tab you can modify the look and behavior of the brush.
Many brushes share the same standard parameters such as "size", "opacity" and "orientation".
Changes the thickness of the stroke.
Changes the transparency of the stroke.
Defines how much the shape rotates during the stroke.
Clicking on the
icon at the end of the parameter list will unfold the advanced parameters list.
Changes the horizontal scale of the shape.
Changes the vertical scale of the shape.