Loops in warp knitting are called laps. There are two types of laps: over laps, where the yarn wraps around the needle, and under laps, the length of yarn connecting loops. Overlaps are formed through shogging and sewing motions, while underlaps connect two successive overlaps. The main lap variations are closed laps with overlaps and underlaps in opposite directions, open laps with overlaps and underlaps in the same direction, laying-in with only underlaps, and miss lapping with neither overlaps nor underlaps.