Voice commands and gesture recognition are two mechanisms by which an individual may interact with content such as that on a display. The articulated landing gear may have a hollow structural post and a hollow trailing arm coupled by a pivot joint. Charge retention is enhanced by utilization of high work function nano-crystals in a non-conductive trapping layer and a high K dielectric charge blocking layer. The mapped exchanges may then be forwarded to a SCSI3 based storage subsystem to permit such an updated storage subsystem to appropriately interact with a cluster of host systems. Other aspects include biasing the selection of the elements of the first ordered set towards a large extent, and of introducing variations in the number of elements selected, with the similarity score being updated by an amount that is a function of the number of elements.