title: pandoc.convert pdf formatting in R
body: <p>I am new to R and am trying to convert a markdown document to PDF using the <code>Pandoc.convert</code> function.  <code>Pandoc.convert</code> creates the PDF just fine, although the border on the document is ridiculously large.  Is there a way to set the border in <code>Pandoc.convert</code> to a smaller border?</p>
  
  <p>Example used:</p>
  
  <pre><code>Pandoc.convert(f="myfile.md", format="pdf", options="-s")
  </code></pre>
  
  <p>I have tried looking in the Pander package help, and on the Pander site and found no result for <a href="http://johnmacfarlane.net/pandoc/faqs.html" rel="nofollow">Pandoc.convert</a>.</p>
  
  <p>There are three option in pandoc, including: <code>-V geometry:margin=1in</code></p>
  
  <p>Although, I have found none for <code>Pandoc.convert</code> specifically.  Is this even possible with just the <code>Pandoc.convert</code> command, without getting into LaTeX?</p>