A joint boot, wherein sealing performance of a large-diameter attachment part to an outer casing is enhanced, includes a large-diameter attachment part 2, a small-diameter attachment part 4 and a bellows part 5. Furthermore, it is preferable that the receipt information has date information in which the cart ID is issued. However, that example is non-limiting, as the teachings herein apply to any network that employs in-sequence data delivery and duplicate data detection at handover. In response to selection of a first one of the plurality of delivery windows, it is determined whether the order may be delivered in the first delivery window. The at least one arm may be rotatably coupled with the spherical structure. The sets of data can be organized andor analyzed by generating a data structure for the sets of data and comparing the data structure for the at least two sets of data.