title: right/left align subtitle position in plot
body: <p>How can I change the position of the subtitle in r "base" plot. Is there a special argument? I want to dynamically have the subtitle left or right aligned.</p>
  
  <h3>data</h3>
  
  <pre><code>plot(mtcars$mpg,mtcars$qsec,xlab="",sub="I WANT TO\nBE RIGHT\nALIGNED")
  </code></pre>
  
  <h3>plot data with desired output in red</h3>
  
  <p><a href="https://i.stack.imgur.com/AiBIx.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/AiBIx.jpg" alt="enter image description here"></a></p>
  
  <h3>EDIT</h3>
  
  <pre><code>plottR &lt;- function(...) {
      plot(...)
  }
  
  plottR(mtcars$mpg, mtcars$qsec, ylab="Y Must Center", xlab="X Must Center", main="Must center", sub="Must right-align",adj=1)
  </code></pre>
  
  <p>Can I input something to plottR so it only aligns the subtitle?</p>
  
  <h3>EDIT2</h3>
  
  <p>I just found out. I can evaluate the <code>title()</code> inside plot.</p>
  
  <pre><code>plottR(mtcars$mpg, mtcars$qsec, ylab="Y Must Center", xlab="X Must Center", main = "Must Center", title(sub ="Hey Only\nim right\ncool huh?",adj=1))
  </code></pre>