A magnetic controlled power generator provides a magnetic controlled loading device, power generator and flywheel device to form two independent modules which are easily assembled and disassembled for easy manufacture and maintenance. The choices may indicate conditions or problems and may be organized in levels such that selection of a first choice in one level determines choices presented in a subsequent level. The variable cell size circuit controls successive accesses to a cell in the memory device, and it resets a byte count when the byte; count equals the cell size value to initialize the circuit for a subsequent access operation. In another aspect the data is initially transmitted over a first and a second carrier in the modem output signal having respective first and second frequencies and bandwidths. Each of the XML elements is populated with corresponding ones of XBRL facts to yield the structured XML data model instance.