There is provided a method for clock reference insertion during packetization of an encoded data stream, wherein said packetization is performed before buffering of the data stream. The motor includes a segmented stator and a resiliently flexible clip. The retainer has a sidewall structure forming an internal pocket for retaining the non-split sinker, and a vertical support wall joined to the retainer sidewall. The activestandby states of the computers are monitored, and the standby computers are changed thereby to widen the possible range of application to other business systems, removing copy operation of disk images from the active computer to the standby computers. Means are supplied for fixing the first connector to the mast. The combination vegetation trimmer and edger unit may be used in a first, horizontal cutting plane position for lawn trimming, and may be further used in a second, vertical cutting plane position for edging.