An instant photographic film unit includes a mask sheet having an image frame and two sheets, one of which has a photosensitive layer, laminated and bonded together, and a developing liquid container disposed in a predetermined position for supplying a developing liquid between the two sheets to produce an image. A graphical program is provided that includes a plurality of interconnected nodes that visually indicate functionality of the program. Pairs of synapse cells relate cell sets, each synapse cell having O and E values of one cell set and A and V values equal to the E and O values of the other cell set. The reactive material, emitter, and detector are selected based on the desired target material to be sensed. The pump has a housing that has a cylindrical outside surface. Dispersed within this solid non-elastomeric continuous phase are many multi-compartment porous chemically crosslinked elastomeric particles that have a mode particle size of at least 1 \u03bcm and up to and including 10 \u03bcm.