A cleaning device configured to clean an outer surface of a conveyor belt on a conveyor belt system is disclosed. Different channels may experience different spreading factors. The system includes a router in communication with the biometric clients. The mnemonic is interpreted according to the translator definition in response to previously processing a mnemonic command specifying the mnemonic and the translator definition. According to still further aspects, the invention relates to Mo andor MoSe2 etch solutions that are useful in an overall photolithographic process for forming a photovoltaic cell andor interconnects and test structures in a photovoltaic device.