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Specifies whether to use A1 style or R1C1 style for cell references.
public enum ReferenceStyle : short
A1 = 0
Specifies to use A1 style. Absolute references are written as $A$1 and relative references are written as A1.
R1C1 = 1
Specifies to use R1C1 style. Absolute references are written as R1C1. Relative references are written as R[y]C[x] with y being the relative row offset and x being the relative column offset.