The invention is a loading system, which is a combination adjustable height stairway and a landing platform at one end that can be elevated to the level of the aircraft loading door and a lifting portion for loading articles to and from the landing platform. A method of fabricating a flexible color filter comprises the steps of: forming a flexible substrate on a rigidly substrate; forming a color filter film comprising a plurality of color filter patterns; and separating the flexible substrate from the rigidly substrate. The APIs further provide a mechanism to interface with inputoutput devices commonly found in embedded systems running in a resource-limited environment. The plant extract may be contained in a liquid enteral product such as an infant formula or may be incorporated into lozenges, candies, chewing gums and the like.