title: Bold boxplot labels in R
body: <p>Does anybody know how to embolden the <code>x</code> and <code>y</code> axis labels ("Single sample" and "Value axis") in an R boxplot?</p>
  
  <p>This is what my boxplot looks like:
  <img src="https://i.stack.imgur.com/k7WHI.png" alt="http://img822.imageshack.us/img822/331/23807704.png"></p>