title: How to add division sign / times sign / plus sign in xcode 7?
body: <p>I'm using xcode 7, and learning ios development from the Stanford open class.
  The teacher is using the xcode6 to build a calculator, he can add the (+, -, x &amp; division sign) in the button, but in xcode 7 i can't find these character from the Edit->Special Characters. But there have 4 characters in bold and black. I can't set the color to blue. Is this a change in xcode7? How can i add the +-x% in the same font and style as the number buttons?
  Please help.
  Thanks.</p>