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The let statement is a complement to the set statement, used for defining script variables. The let statement, in opposition to the set statement, evaluates the expression on the right side of the ' =' before it is assigned to the variable.


Let variablename=expression


The word let may be omitted, but the statement then becomes a control statement. Such a statement without the keyword let must be contained within a single script row and may be terminated either with a semicolon or end-of-line.