A plurality of strips are releasably interconnected to a support bar as an assembly for mounting a shutter within a window frame. The customeruser of the ATM createsselects specific alerts to be outputted during subsequent ATM transactions. By treating inter-subblock paths as intra-subblock paths, no inputoutput delay restriction is required for the logical compound of inter-subblock paths. The drive system is configured to reduce a speed setting in response to a signal from the proximity sensor indicating detection of a potential obstacle in a forward direction, while continuing to advance the robot according to a heading setting. The reconstructed video stream is subtracted from the video stream to produce a residual stream.