A test method for Internet-Protocol packet networks that verifies the proper functioning of a dynamic pinhole filtering implementation as well as quantifying network vulnerability statistically, as pinholes are opened and closed is described. The invention prevents dislocation by providing a restraining force on the implant under all movements of the joint. Labels on the same roll include a common batch number, while labels on different rolls include different batch numbers. The solid form is useful in effective delivery of high dose levels of active material. Accordingly, distortion of the first wrapping portion can be facilitated and pressing of sheets stored in the sheet package against a pickup roller can be achieved with an adequate degree of force.