The method and system of the invention enables free-from digital ink annotation of data traces and storage management of the data trace based upon the free-from digital ink annotations. The additional descriptors also identify a defined separation between a signaling block and at least one data block, in addition to the positions of the filler bits within the transmission block or data block. The graded-stoichiometry insulating tunnel-barrier layer includes graded stoichiometry to compensate for thickness profile and thereby produce a uniform tunnel-barrier resistance across the structure. The user allocations determine user allowances of network access representing limits on the amount of network access users can consume in a time interval. Then the conditioning disc is moved off of the upper surface of the polishing pad and to a stand-by position in which the abrasive surface of the disc is submerged in a liquid. A sealing member is positioned in an axially outward end of the central aperture and is axially moveable with respect to the housing to seal and unseal the central aperture.