SBVR_ — Major Disconnect Between Structural Rule and a Concept's Characteristics

ISSUE TITLE: Major Disconnect Between Structural Rule and a Concept's Characteristics and Definition ISSUE DESCRIPTION: There is currently an incomplete and therefore ambiguous connection between 'necessity' (proposition represented by 'necessity statements' in SBVR SE; 'proposition that another proposition is a necessity'), and 'essential characteristic sets' and/or 'implied characteristics'. Without knowing whether a given 'necessity' is intended to specify an 'essential characteristic set' or an 'implied characterisitc' for a given concept, it is not possible to determine what the concept is and whether its intension is correct (i.e. characteristics not in an essential characteristic set are implied by it). This is true for all the concepts that a given 'necessity' applies to. - Need a required way to specify that each 'necessity', for each concept it applies to, either provides the specification for an essential characteristic set or that it does not. If the 'necessity' does not provide the specification for an essential characterisitc set, it must meet the requirements above of being a characteristic implied from each of the essential characteristic sets that create any of the concepts that the 'necessity' applies to. How this is expressed in an SBVR vocabulary must be unambiguous.

Add a section that describe the relationship between structural rules and concepts.