A.Extend arm and point finger in the direction to move the boom
B.Extend arm with the thumb pointing downward and flex fingers in and out
C.With f rearm vertical and forefinger pointing up,move hand in small horizond circles
D.With arm extended downwards and forefinger pointing down,move hand in small horizontal circles

A.Use one hand to give any miotion signal , and place the other hand motionless in front of the hand giving the motion signal 
B.Extend arm with the thumb pointing up , and flex the fingers in and out for as long as the load movement is desired
C.First tap your elbow with one hand , and then proceed to use regular signals
D.First tap the top of your head with your first , and then proceed to use regular signals

A.Extend arm with the palm down and and hold this position rigidly
B.Place both fists in front of the body with the thumbs pointing outward each other
C.Clasp hands in front of you body
D.Extend arm with the thumb pointing up, and flex the finger s in and out for as long as the load movement is desired

A.Extend arm with the thumb pointing up and flex the fingers in and out
B.Place both fists in front of the body with the thumbs pointing upward
C.With forearm vertical and forefinger pointing up,move hand in small horizond circles
D.Extend arm with the fingers closed and thumb upward

A.Extend arm with the palm down and and hold this position rigidly
B.Place clasped hands in frontof your body
C.extend arm and move hand rapidly right and left with the plam outward
D.Place both fists in front of the body with the thumbs pointing outward