Moves vertices inward or outward, based the average vertex normals within the brush radius. This is a very default behavior for sculpting and can be used in most cases.
It is common to use this particular brush with heavy customization for creating many custom brushes.
Vector Displacement Maps are supported for the Draw brush to insert complex & overhanging shapes. Unlike regular displacement, this uses all 3 color channels of the image to displace geometry in three directions instead of just one.
Ideal images for vector displacement are open EXR files with color clamping disabled.
This feature is only supported with Area Plane mapping.