The Texture node makes 3D textures available to the Compositor.
A vector (XYZ) transforming the origin of the texture.
A vector (XYZ) to scale the texture.
The texture can be selected from a list of textures available in the current blend-file or linked-in textures. The textures themselves can not be edited in the Compositor, but in the Texture Node Editor.
Gray-scale color values.