A microstructure has a substrate, a fixed electrode having a plurality of fixed fingers fixed to the substrate, a movable electrode having a body and a plurality of fingers extending from the body, the movable electrode being movable relative to the fixed fingers to vary a capacitance of the electrodes. With this adjustment method, if the image quality of the printed image has dropped, even a user who is not well versed in an inkjet printer’s functionality can achieve an appropriate image quality improvement. Prefetching of memory operations may be based on a prefetch address determined from a base memory address, the stride length L, and a prefetch distance. The optical area sensor comprises a plurality of arrays including a backscatter reflection array to estimate the height of liquid within the measuring chamber and at least one further correction array to correct the estimation made by the reflection array. The present invention also provides compositions thereof, and methods of treating Raf-mediated diseases.