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Computing (FOLDOC) dictionary (also found in English - Vietnamese, English - English (Wordnet), )
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programming The scope of an identifier is the region of a
program source within which it represents a certain thing.
This usually extends from the place where it is declared to
the end of the smallest enclosing block (begin/end or
procedure/function body). An inner block may contain a
redeclaration of the same identifier in which case the scope
of the outer declaration does not include (is "shadowed" or
"occluded" by) the scope of the inner.