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Gets or sets the margin of the watermark label for the range.
Margin Margin { get; set; }
Property Margin As Margin
worksheet.Range["A1"].Watermark = "Required";
worksheet.Range["A1"].LabelOptions.Margin = new Margin(2, 4, 2, 4);
Margin margin = worksheet.Range["A1"].LabelOptions.Margin;
int left = margin.Left;