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- Returns the logical value 0 (false).
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- Returns one value (x) if a condition is true, and another value (y) if the condition is false.
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- Tests x for the value ERR. Returns 1 (true) if x is the value ERR; returns 0 (false) if x is not the value ERR.
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- Tests x for the value NA. Returns 1 (true) if x is the value NA; returns 0 (false) if x is not the value NA.
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- Tests x. Returns 1 (true) if x is a value or a blank cell; returns 0 (false) if x is a text string or a range.
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- Returns 1 (true) if a text string is a defined range name; returns 0 (false) if it is not.
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- Tests x. Returns 1 (true) if x is a text string or text cell; returns 0 (false) if x is a value, NA, ERR, or blank cell.
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- Returns the logical value 1.
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