Systems and methods for extending or modifying the behavior of mobile software, such as JavaScript, HTML, andor data that can be downloaded to a client device. The lens system forms a real image of the light source near the aperture stop. When there is a spare, unallocated blocks on the spare are logically or physically set to zero upon migration. The method comprises simultaneously developing and gumming the imaged element with an aqueous alkaline developing-gumming solution comprising one or more water-soluble polyhydroxy compounds of the following structure:.