title: What is the default font in R 's plot()?
body: <p>I can not find out what the default font for the <code>plot()</code> option in R is. I recall somewhere there it was <em>Helvetica</em> but I cannot find any source to confirm this idea. Does anyone know what the default font in the <code>plot()</code> option is and how do I change the font?</p>
  
  <p>I know there is the <code>family</code> option but that is very limited in choice of font. I am also aware there is a <code>family</code> option under <code>pdf()</code> which defaults to <em>Helvetica</em> but this captures the graphical image so the font of my plot is determined by the font in the <code>plot()</code> option.</p>
  
  <p>Anyone got any ideas? In particular, I am interested in making all the text (plot labels, axis labels, main title, etc) into the <em>Helvetica</em> font. Thanks in advance :)</p>