In an immersion lithography apparatus or device manufacturing method, the position of focus of the projected image is changed during imaging to increase focus latitude. The CAM search engine includes a data compare plane having a content addressable memory die including an array of comparison cells. Mover sections complementary in shape to the non-annular magnets. Desired patterns can be formed on either one of the electrode layers by photo-etch techniques thereby providing a process that can be tailored to a large number of applications. The halftoned frames or images are then viewed in a sequence in time. The fastener with combined mechanical and osteogenic means provides initial, immediate anchoring and long term anchoring.