A video frame arithmetical context adaptive encoding and decoding scheme is presented which is based on the finding, that, for sake of a better definition of neighborhood between blocks of picture samples, i. The frictional wheel is operatively connected to a drive unit and can be lifted from the support by a swiveling lever. The first Schmidt trigger sets a first logic level when an output of the first controller reaches the first voltage level. Pixel heights may be adjusted by modulating the distance between scan lines. A non-transitory computer-readable medium having embodied thereon a computer program configured to perform the method is also provided. The method is provided to include the step of dissolving a fluorine-containing acid amplifier in an organic solvent thereby producing a solution of the fluorine-containing acid amplifier, the fluorine-containing acid amplifier being represented by general formula :.