This invention relates to accessing, publishing, and navigating in online or locally stored computer based multimedia content. The alternately arranged in a checkerboard pattern in which noninverting and inverting buffers are located in the victim wire line in locations corresponding to locations of the inverting and noninverting buffers in the at least one aggressor wire line. Therefore, the present invention is capable of fastening or unfastening more sizes of bolts than that of a single spanner head.