These are two common and very useful nodes.
Create this node by selecting: Hw Shader Nodes > Inputs Common > UVSet in the ShaderFX editor.
The UV Set node controls the arrangement of the UV texture coordinates.
A few nodes are groups that contain a UV Set node. Examples include a Texture Map node (Hw Shader Nodes > Textures > Texture Map) or a Checker 2D node (Hw Shader Nodes > Patterns > Checker 2D).
For example, the Checker 2D node uses the UV Set node to determine how to divide the checker pattern. The checker pattern is connected to the UV layout of the object, and when you change the UV's of your object, the checker pattern also changes.
Refer to Multiplying your texture to repeat it in a tile pattern to create a different, more dense effect for an example of how to vary your texture pattern using a UV Set node.
Refer to Working with UV sets for information how to use default or custom UV set names.
Create this node by selecting: Hw Shader Nodes > Inputs Common > Vertex Color in the ShaderFX editor.
The Vertex Color node controls the color of the vertices.
Refer to Blending the textures using the Vertex Color node for an example of how to vary your texture pattern using a Vertex Color node.
Refer to Working with UV sets for information how to use default or custom color set names. The guidelines for this process is equivalent to that of UV sets.