title: Is it possible to adjust the baseline in NSAttributedString?
body: <p>I'd like to slightly modify the y position of a character in an <code>NSAttributedString</code>. I know I can <a href="https://stackoverflow.com/questions/8555735/how-to-make-subscripts-and-superscripts-using-nsattributedstring">subscript</a> (or superscript) using the attribute dictionary:</p>
  
  <pre><code>@{(id)kCTSuperscriptAttributeName: @(-1)}
  </code></pre>
  
  <p>Unfortunately the shift caused by this is too large in my case. I'm looking for an option to adjust the baseline in 1-point steps.</p>
  
  <p>The attributed string will be displayed in a <code>UIButton</code> using <code>-setAttributedTitle:forState:</code>.</p>