Bug 203204 [Regression] Error occors when preview the attached report design as XLS [1203]
engine/org.eclipse.birt.report.engine.emitter.prototype.excel/src/org/eclipse/birt/report/engine/emitter/excel/ExcelWriter.java
writer.closeTag( "Cell" );
		writer.openTag( "Cell" );
		writer.attribute( "ss:Index", end );
		writer.attribute( " ss:MergeDown", length );
		writer.closeTag( "Cell" );
		writer.closeTag( "Row" );
	}
	public void insertSheet( File file )
	{
		try
		{
			BufferedReader reader = new BufferedReader( new FileReader( file ) );
			String line = reader.readLine( );
			
			while(line != null)			
			{
				writer.literal( line );
				line = reader.readLine();
			}			
			
			reader.close( );
			
		}
		catch ( IOException e )
		{
			logger.log( Level.WARNING, e.getMessage( ), e );
		}
	}
}