A greeting card display includes an upper tier and a lower tier positioned below the upper tier. The at least one reinforcing structure includes at least one free-standing carbon nanotube structure. For each scanline to be rendered, points of intersection between the line segments and the scanline are determined, and each point of intersection is rounded to an adjacent position selected from a finite set of positions on the scanline using a rule chosen according to the amount of rotation. In one embodiment, the IOC adheres to standard messaging and communication protocol used by other nodes in the ACE. By combining catalyst particles from the high boiling fraction having high carbon content helps to provide additional heat for regeneration. The inelastic spectrum of Aluminum is determined from measurements made in a water tank.