Compositions and methods are disclosed which are useful of the treatment and prevention of proliferative diseases. For example, a plurality of sensors may be used to sense force distribution information at points on a substantially continuous surface, and a pointer manager may be used to map the force distribution information to pointing information for display on a computer screen. In the method of manufacturing the reproducing head, after forming the protection layer on an element-to-be film to make the MR element, a first electrode-to-be film to make the first layers is formed continuously without interposing a step of exposing the protection layer to the air. In the case where the client receives a summary advertisement and desires to obtain more detailed information, the client can receive a detailed advertisement and order a product via the screen. Means for telescopically adjusting the length of horizontal or vertical channels may be included. The technique includes de-quantizing the quantized coefficient level values based upon the quantized coefficient level values and the quantization parameter only if the quantized coefficient level values and the quantization parameter are jointly within a predefined range of acceptable values.