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This decorative board is defined by two characteristic features. First, it is edge-matched—that is, milled with a tongue on one side and a groove on the other so that the boards fit together to make an integrated surface. Second, it incorporates one or more half-round beads milled into the finished surface. At the very least there's one bead and quirk (a sharp recess) running along the tongue side of the board that serves the purpose of disguising the joint, allowing the boards to move subtly with seasonal moisture changes. It may also have one or several center beads, which are milled in the center of the board face to add to its decorative effect.