31; additional; ; anchor system of Claim 24; additional second post, a portion of which is at least a potrion of lower member and below of portoin where are the retainer base; and movement of the second post in both transverse direction.
31. The anchoring system of claim 24 additionally comprising a second post, a portion of which is located above at least a portion of the lower member and below at least a portion of the retainer base so as to limit movement of the second post in both transverse directions.