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square knot with a half hitch on each side is typically used for the first knot when lacing a rib. [Figure 3-26]  This is followed by a series of modified seine knots until the final knot is made and secured with a half hitch. [Figure 3-27] Hidden modified seine knots are also used. These knots are placed below the fabric surface so only a single strand of lacing is visible across the rib cap. [Figure 3-28] 

Structure and accessories within the wing may prevent a continuous lacing. Ending the lacing and beginning again can avoid these obstacles. Lacing that is not long enough to complete the rib may be ended and a new starting knot can be initiated at the next set of holes. The lacing can also be extended by joining it with another piece of lacing using the splice knot shown in Figure 3-29 . 

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