Esther M. Zimmer Lederberg: Stepanov - Direction, Level (Left Leg)

Figure "u" is the leg clef position zero and corresponds to legs straight down position.
Figure "v" is leg position straight down.
Figure "w" is leg position low level: forward, side, backward.
Figure "x" is leg position middle level: forward, side, backward.
Figure "y" is leg position high level: forward, side (no backward, for anatomical reasons).