title: Cocoa Changing properties of NSTextView
body: <p>I have an NSTextView object in my window.
  I have 2 problems that I need to solve.</p>
  
  <p>1) My NSTextView content changes between different NSStrings that I have set. I would like to make the text a bit bigger but when the app initialize, there will be no content there.How do I set it that all the Strings passed to it can make their size bigger. Thanks</p>
  
  <p>2) I don't want my content editable by the user but when I uncheck "Editable" in the inspector, I wouldn't be able to change the content of the NSTextView myself in the code. How do I make it so that the content may change but the content remains unediable by the user? Thanks!</p>