A building system includes connectors for quickly and easily interconnecting building system parts. The air dryer is capable of drying and possibly filtering andor cleaning air passing there through. Typically, the rotating cutter has a different number of blades than the stationary cutter. A clocked latch is coupled to the output of the second multiplexed masterslave flip-flop and provides the test bit output. Any previous commercial unit that has been removed has been stored in a file and a pointer to the file inserted in place of the commercial in the sequential stream of the television program being recorded. The second NFC antenna comprises a NFC loop antenna having at least one turn.