Advance acoustic LIGHTNESS 3 Manual page 27

Now thread the upper ends of the blue speedbag lines through the
blacktabs on the seat surface and pull them through (Fig. 1). Fold the
upper loop of the line into a kite knot and pull the lower, red-marked
part of the line through it (Fig. 2). Then pull the kite knot up tight be-
hind the black ball.
Now fasten the lower, red-marked ends of the lines with kite knots on
the short red attachment lines on the lower end of the footboard
(Fig. 3).
Fig. 1
Fig. 3
Fig. 2
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