How do you adjust text kerning using Interface Builder in Xcode 7?

Question

There are a myriad of settings for NSAttributedParagraphStyle that I can see in Interface Builder:

Answer 1

A shortened attempt:

@IBDesignable class KerningLabel: UILabel {


  @IBInspectable var kerning: CGFloat = 0.0 {
    didSet {
      let attrStr = NSMutableAttributedString(string: "Foobar")
      attrStr.addAttributes([NSKernAttributeName: kerning],
                            range: NSMakeRange(0, attrStr.string.characters.count))
      attributedText = attrStr
    }
  }
}