title: Facebook Graph API Groups
body: <p>I try get information about own groups over <a href="http://developers.facebook.com/docs/reference/api/group/" rel="nofollow">Graph API</a>.
  On me/groups I get list of groups. But I not understood what is params: <strong>bookmark_order</strong>.</p>
  
  <p>Also we can see param <strong>unread</strong>:1. If I right, it present if another user set some change in group (post new comment). If I refresh group page in browser or open in native android <a href="https://market.android.com/details?id=com.facebook.katana&amp;feature=search_result" rel="nofollow">app</a>, then <strong>unread</strong> is no longer appears. After which api request I can remove unread flag?</p>
  
  <p>Also at group's wall I can ask question. But {group_id}/feed not contain this posts. How I can get it?</p>
  
  <p>I have group document. I can get data about this document: subject, message. But if in document I insert image, then in message param I has string about this image: (img:301666969868743). How can I get this image? Simple GET-request with 301666969868743 (I assumed that this long decimal is ID) return false.</p>