Forestroke

The endopods of the second maxilla and of the trunk limbs flick medially at the termination of the forestroke and the posterior setae of the endopod are pointed medially.

Forward motion can also be produced by the figure-8 stroke, by increasing the angle of attack on the backstroke and decreasing it on the forestroke, and by moving the whole limb from 'forward and down' to 'back and up' (Fig. 10c,d).

Around 1500, beyaerders also applied their chiming technique on the smaller bells of the forestroke.

Yes, and we call it a waving forestroke. It sometimes waves upward, sometimes downward.

The particular kind of forestroke was also indicated by double letters.