title: What is url encoding %2526?
body: <p>Why is <code>%2526</code> used instead of <code>%26</code> to encode an <code>&amp;</code>?</p>
  
  <p>Im invoking a URL to an external site and when I encode the <code>&amp;</code> as <code>%2526</code> the parameters are passed correctly but when I just use <code>%26</code> they are not.</p>