title: SpecFlow - How you properly use the "Background:" command in the feature file?
body: <p>I've been reading articles, watching some screen-casts and playing around with a few sample/demo tutorials.  </p>
  
  <p>I read an article where someone said "don't use too many backgrounds".  I was curious so I tried it in SpecFlow's feature file and it highlights as a command.</p>
  
  <p>I've been trying to find some language guide for "Gherkin" since that's what it's written for, but no luck yet.</p>
  
  <p>So how is it used? and is there any documentation that will show me what other commands I'm missing and how to use?</p>
  
  <p>Thanks.</p>