Page 59 - J. C. Turner "History and Science of Knots"

Ancient Egyptian Rope and Knots 47

Fig. 3. Orientation of crossing strands: 1 = over-S crossing ; 2 = under-S crossing;
3 = over-Z crossing; 4 = under-Z crossing

Fig. 4. Overhand knot (#46)*in S and Z direction

*The symbol # refers to the numbering system of The Ashley Book of Knots [11