title: Valid URL separators
body: <p>I have a long URL with several values.</p>
  
  <p>Example 1:</p>
  
  <pre><code>http://www.domain.com/list?seach_type[]=0&amp;search_period[]=1&amp;search_min=3000&amp;search_max=21000&amp;search_area=6855%3B7470%3B7700%3B7730%3B7741%3B7742%3B7752%3B7755%3B7760%3B7770%3B7800%3B7840%3B7850%3B7860%3B7870%3B7884%3B7900%3B7950%3B7960%3B7970%3B7980%3B7990%3B8620%3B8643%3B8800%3B8830%3B8831%3B8832%3B8840%3B8850%3B8860%3B8881%3B9620%3B9631%3B9632
  </code></pre>
  
  <p>My variable search area contains only 4 number digits (example 4000, 5000), but can contain a lot of them. Right now I seperate these in the URL by using <code>;</code> as separator symbol. Though as seen in Example 1, the ; is converted into <code>%3B</code>. This makes me believe that this is a bad symbol to use.</p>
  
  <p>What is the best URL separator?</p>