title: using scientific notation in R
body: <p>I'm currently using <code>printCoefmat</code> to print a matrix out and want to apply some formatting to the numbers.</p>
  
  <p>I want to force scientific notation when the numbers have an exponent greater than 3.
  I can't quite figure out how <code>scipen</code> works, Does anyone have any idea how I can do this?</p>