title: what other params can I pass to the google hangout uri?
body: <p>I recently discovered a parameter to pass to a google hangout uri to make it "on air": <a href="http://productforums.google.com/forum/#!topic/google-plus-discuss/neMXkRRQNFU" rel="nofollow">reference</a></p>
  
  <p>I'm also wondering if I can pass any other parameters.  I know that we have app_id, but I'm more interested to know if there are other parameters, such as being able to set the title or the hangout in advance, e.g. </p>
  
  <pre><code>https://plus.google.com/hangouts/_?hso=0&amp;title=EdX%20SaaS%20Pairing
  </code></pre>
  
  <p>Because then I could direct people to <a href="https://plus.google.com/u/0/s/%23hangoutsonair%20EdX/hangouts" rel="nofollow">https://plus.google.com/u/0/s/%23hangoutsonair%20EdX/hangouts</a> and they could see all the on air hangouts associated with our MOOC.  I did experimentally try passing title=, topic= and name= all to no immediate effect ...</p>
  
  <p>I'd also love to know if there's a way to automatically start the live broadcast, or even better have the hangout be automatically associated with and published to our G+ pair programming community: </p>
  
  <p><a href="https://plus.google.com/communities/100279740984094902927" rel="nofollow">https://plus.google.com/communities/100279740984094902927</a></p>
  
  <p>Many thanks in advance</p>