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Spread.Sheets supports text decoration. You can specify a line below, above, or through the text using the textDecoration method.
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Using Code
The following example adds a line above the text in cell (0,0), a line below and above the text in cell (1,0), and a line above, below, and through the text in cell (0,1).

JavaScript	Copy Code
activeSheet.getCell(0, 0, GC.Spread.Sheets.SheetArea.viewport).textDecoration(GC.Spread.Sheets.TextDecorationType.Underline);activeSheet.getRange(1, -1, 1, -1, GC.Spread.Sheets.SheetArea.viewport).textDecoration(GC.Spread.Sheets.TextDecorationType.Overline	GC.Spread.Sheets.TextDecorationType.Underline);activeSheet.getRange(-1, 1, -1, 1, GC.Spread.Sheets.SheetArea.viewport).textDecoration(GC.Spread.Sheets.TextDecorationType.Overline	GC.Spread.Sheets.TextDecorationType.LineThrough	GC.Spread.Sheets.TextDecorationType.Underline); var style = new GC.Spread.Sheets.Style();style.textDecoration = GC.Spread.Sheets.TextDecorationType.Overline	GC.Spread.Sheets.TextDecorationType.Underline;activeSheet.setStyle(1, 1, style, GC.Spread.Sheets.SheetArea.viewport);activeSheet.getCell(0, 0, GC.Spread.Sheets.SheetArea.viewport).value("Test");activeSheet.getCell(1, 0, GC.Spread.Sheets.SheetArea.viewport).value("Test");activeSheet.getCell(0, 1, GC.Spread.Sheets.SheetArea.viewport).value("Test");