         super.didReceiveMemoryWarning()
         // Dispose of any resources that can be recreated.
     }
+    
+    // MARK: Convenience
     
     func processTipCalculation() {
         let totalBillFloat: Float? = Float(totalBillLabelValue)

    
    // Variable to Track Tag of Tip Stack Item Tapped
    var tipsStackTag = 0
    
    override func viewDidLoad() {
        super.viewDidLoad()

    
    @IBOutlet weak var cursor: UIView!
    
    // MARK: Properties
    
    // String to hold value of totalBillLabel without the $
    var totalBillLabelValue = ""
    
