Novel vinylazacycloalkane compounds of Formula are disclosed. The gate sensor detects the open condition of the displaceable gate and transmits a wireless signal to a remotely-located indicator. The dietary supplement disclosed is pleasant tasting, is effectively absorbed into the body and is believed to provide substantial therapeutic effects. The bottom pole upper portion width is less than the bottom pole lower portion width. In addition to the tag encoder, the printer has a contone image decoder to decode compressed continuous tone image planes and a bi-level decoder to decode any compressed bi-level image plane in the compressed data. The estimated position andor velocity of the reference signal transmitter is compared to the information contained in the reference signal to estimate bias errors.