title: Clarification of L in R
body: <p>My trail on <code>L</code> in R is:</p>
  
  <pre><code>c&lt;-1:10
  c
  # [1]  1  2  3  4  5  6  7  8  9 10
  c[-1]
  # [1]  2  3  4  5  6  7  8  9 10
  c[-2]
  # [1]  1  3  4  5  6  7  8  9 10
  c[-1L]
  # [1]  2  3  4  5  6  7  8  9 10
  c[-2L]
  # [1]  1  3  4  5  6  7  8  9 10
  </code></pre>
  
  <p>I tried using <code>?L</code> without success.</p>
  
  <p>What indeed is <code>x[&lt;n&gt;L]</code>? Any example for further usage of it?</p>