title: How do I reset all options() arguments to their default values?
body: <p>As noted in the title, I'm trying to understand how to reset all arguments in <code>options()</code> to their default settings.  I searched online and in the <code>?options</code> help file and am failing to locate an answer.</p>
  
  <p>I expect the answer is readily available, and I'm simply struggling to find it.</p>
  
  <p>Thanks.</p>
  
  <p><em>Edit:</em>  While I agree <a href="https://stackoverflow.com/questions/15946953/how-to-set-r-to-default-options">How to set R to default options?</a> is the same question, I'm failing to see in its selected answer the clear/explicit solution I requested: how to <strong>reset</strong> <code>options()</code> to its defaults.  The selected answer in that thread clearly explains how to <em>save</em> <code>options()</code> settings and <em>load</em> them later.</p>