A method for encoding a data mask that consists of a given total number of bits and includes a selected group of contiguous bits within the total number, the selected group having a left end and a right end. An electronically powered dispensing mechanism is contained within the housing for dispensing a measured sheet from the roll of towel material upon actuation of the dispensing mechanism. As such, some, all or none of the externally provided address signals are allowed to transition past address buffer circuitry. A transactional process is hosted by receiving a bid or rebid from the spectrum user for a matched spectrum offering and receiving a counteroffer from the spectrum holder that posted the matched spectrum offering. The first quantized quality score is compared with the base quantized quality score.