question about weightlifting technique

[gerasimos]

hello to all lifters in the forum.i want to ask a question about weightlifting technique.when a lifter perform lifts from below the knee(snatch or clean) the center of bodyweight is on the heels or in the middle of the foot?

[bobtakano]

At the knee the center of balance should be on the heels. If the bar goes lower, the center should move slightly forward. :)