A quick set-up tilt table for securement to a precision vise of a tool. The fingerprint may be generated by computing an energy spectrum for the audio sample, resampling the energy spectrum logarithmically in the time dimension, transforming the resampled energy spectrum to produce a series of feature vectors, and computing the fingerprint using differential coding of the feature vectors. The source identification of the write command may consist of such identifiers as a protocol dependent Host ID, the extended-copy-specification-defined List ID, a time stamp, and the size of the backup medium block written. The storefront purchase can be completed, during which at least a portion of the non-negotiable credits are expended. The tensile force sensors measure left and right tensile forces of the tension member. Each one of the flexible retention arms is disengagebly engaged with a respective one of the retention arm engagement structures for securing the protective enclosure in relative position with respect to the outlet cover plate.