         CGContextStrokeRectWithWidth(contextRef, borderRect, 2.0)
         
         // label
-        let string = "L\(level)X\(x)Y\(y)"
+        /*let string = "L\(level)X\(x)Y\(y)"
     #if os(iOS)
         let font = UIFont(name: "Helvetica Neue", size: 36.0)
     #elseif os(OSX)

        assert(contextRef != nil, "contextRef == nil")
        
        let rgbSpace = CGColorSpaceCreateDeviceRGB()
        let drawCGColor = CGColorCreate(rgbSpace, _colorArray)
        let drawUIColor = UIColor(CGColor: drawCGColor!)
        //let drawNSColor = NSColor(CGColor: drawCGColor!)
        
/*        let drawColor = CGColorCreateGenericRGB(CGFloat(color.red), CGFloat(color.green), CGFloat(color.blue), CGFloat(color.alpha))*/
        CGContextSetStrokeColorWithColor(contextRef, drawCGColor)
        
        // border
        let borderRect = CGRectMake(1.0, 1.0, CGFloat(tileWidth-2), CGFloat(tileHeight-2))

        let textRect = CGRectMake(CGFloat(tileWidth)/2 - textSize.width/2, CGFloat(tileHeight)/2 - textSize.height/2, textSize.width, textSize.height)
        string.drawInRect(textRect, withAttributes: attr)
        
        //let imageRect = CGRectMake(CGFloat(0), CGFloat(0), CGFloat(tileWidth), CGFloat(tileHeight))*/
        let flipVertical = CGAffineTransformMake(1, 0, 0, -1, 0, CGFloat(tileHeight))
        CGContextConcatCTM(contextRef, flipVertical)
    
