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Coverage is defined in a multi-dimensional matrix that takes into account the services, the methods of the services, and the modes of use of the services (including normal use, degerate degenerate use, and edge cases). Coverage . NOTE: in many cases there are many "normal" modes of use which may extend the number of columns in the spreadsheet. For example, GUIs that respond differently to different authorization levels, or methods that take optional parameters (e.g. Pfs). Coverage also considers combinations of calls that have related effects to each other and a placeholder for "ad hoc" tests that can be filled in as gaps in coverage are identified.
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