title: What is a slug?
body: <p>I'm currently working through CodeIgniters tutorial in its fantastic documentation. However there is a term that is frequently used and it's called a "slug". I've looked around a lot to find out what the term means and I can't make sense of what it is and what it's for. Here's an example of when it's used:</p>
  
  <blockquote>
    <p>With this code you can perform two different queries. You can get all
    news records, or get a news item by its slug</p>
  </blockquote>