A surface can be divided by UV grids (the natural grid division of the surface). Patterns may be later applied to the divided surface. See Patterning Surfaces.
The UV grid acts as a guide in patterning the surface. Manipulating the divided surface also manipulates the parametrically dependant patterns and components. Certain parameters of the divided surface can be edited in the drawing area of the conceptual design environment.
Locations in 3D space are based on the XYZ coordinate system. This system can be applied globally to the modeling space or to a work plane.
Since surfaces are not necessarily planar, the UVW coordinate system is used to plot location. This maps a grid adjusting for the contours of a non-planar surface or form. UV grids, as used in the conceptual design environment, are comparable to XY grids.
The default division of the surface is by number: 12x12 for imperial units and 10x10 for metric units.