The rules defining the scope of declarations and the rules defining which identifiers are visible at various points in the text of the program are described in this chapter. The formulation of these rules uses the notion of a declarative region.
Rationale references: 11 General Program Structure - Visibility and Overloading, 11.3 Visibility Rules, 13.2.3 (Ch 13 Tasking) Visibility Rules
Style Guide references: 4.2 Visibility, 5.7 Visibility
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