Shader Field
A Shader Field in a Vertex Map distributes values (weighting) according to its grayscale gradient.
The Shader Field generates grayscale values based on the shader, which can be blended with other Fields or Modifier Layers in the respective Field lists (e.g., Effectors or Deformers).
Textures and shaders must be projected onto the clones/points in some manner. In the absence of Material tags, UV mapping (see also UVW mapping in MoGraph) is used.