A system comprising inexpensive composite panels and a configuration that holds them, all components of which are man portable. The motion of moving scales is opposite in direction to the motion of a dial moving in a direction defined by user input. The color formulation tool obtains weathered optical parameters for the color standard from a color database and predicts the color of the color standard from the colorant concentrations and weathered optical parameters. A securement attachment means secures the pocket member to the backside of the handheld electronic device, and two lateral slots receive the pins. The carriage lateral guide members are for continuous engagement against the guiding gates when the carriage moves between the gates in the deployed position towards and away from the storage area open end, for guiding the carriage towards and away from the storage area during article loading and unloading operations therein. In particular, satellite artificial chromosomes that, except for inserted heterologous DNA, are substantially composed of heterochromatin are provided.