title: CSS url() format() - what does it do?
body: <p>I am having trouble finding any documentation about the following CSS syntax, mainly because any page about 'css url format' is talking about the way URL's are structured, and not this particular syntax:</p>
  
  <pre><code>@font-face{
  font-family:awesomefont;
  src: url(fonts/awesome.woff) format("woff"),
  url(fonts/awesome.ttf) format("truetype")
  }
  </code></pre>
  
  <p>What does the <strong>format()</strong> part do here? I guess it tells the browsers what type of file they should expect. However, I have not seen it anywhere else except in @font-face declarations, but does it get used outside of that as well? </p>
  
  <p>And how does the 'format'  relate to the MIME type of the requested file?</p>