Computer software applications presently allow the User to preview the impact of some commands on active documents via a small preview window. The zoom lens comprises a first lens group located adjacent to an object side and having a negative refractive power, and a second lens group located adjacent to an image side and having a positive refractive power, wherein zooming is made as an interval between the first lens group and the second lens group is varied. A first and a second pixel can integrate light non-concurrently, and then their outputs may be compared. A column redundancy selection circuit activates an enable signal according to a block address signal when all row hit signals are deactivated. The device comprises a flexible membrane and a structural part, which device further comprises an actuation part located on a first side of the membrane, which device further comprises a mixing chamber located on a second side of the membrane, wherein at least a partial inclination of the membrane results from an inclination of the actuation part relative to the structural part. A pick-and-place handler is configured to move the device.