An LSI package comprises an LSI element and a wiring board. Tunable fluid end embodiments comprise a family, each family member comprising a fluid-end housing with at least one installed tunable component chosen from: tunable check valve assemblies, tunable valve seats, tunable radial arrays andor tunable plunger seals. In one embodiment, a method for reversible data hiding comprises identifying carrier data having a plurality of components and establishing prediction-errors for each of the components of the carrier data. A control circuit is connected at least to a respective first semiconductor switching element and the voltage boosting circuit. Menus of multiple icons are also available for the many roles of the user. Automatically generated image thumbnails of the screen data for the online meeting may be employed to navigate to the earlier point in time.