 A number of knots have virtually identical variants, which differ by the transposition of L and R pairs.For instance, a variant of the Half-Windsor, Li Ro Ci Lo Ri Co T (Knot 7), is the knot Li Ro Ci Ro Li Co T (Knot 8), sometimes called the co-Half-Windsor.References to the Half-Windsor in the literature sometimes refer to one, sometimes to the other.