title: conda creating environments. Parameter choice
body: <p>The documentation for <code>conda</code> has <a href="http://docs.continuum.io/conda/intro.html" rel="nofollow">the following example</a>:</p>
  
  <pre><code>$ conda create -n py33 python=3.3 anaconda
  </code></pre>
  
  <p>My question is, why do we specify <code>anaconda</code> as an argument here? (what other options are available and what are the differences)? </p>
  
  <p>Is <code>anaconda</code> here a meta-package? If so, what other metapackages are available?</p>