Supporting the implementation and collaboration of a variety of security modules in a distributed computing network. This neuronal-restricted precursor expresses highly polysialated or embryonic neural cell adhesion molecule and is morphologically distinct from neuroepithelial stem cells and spinal glial progenitors derived from embryonic day 10. Support 20 comprises an outwardly extending peripheral flange 21 which is shaped to cooperate with frame 30 so that the frame can be snap-fit closed onto support 20. Advantageously, the refined avocado oil of the invention is substantially free of acetogenins and furanic lipids. After each of the sequentially displayed windows, an implementation for fading the starting or currently displayed window out of focus and after each fading out of the currently displayed window, for then bringing the next subsequent window into displayed focus.