title: Parameter for more than 10 posts in WordPress RSS
body: <p>I need to generate an RSS feed for posts in WordPress that contains more than the usual 10-or-so items.  I understand that somewhere I need to do something such as <code>query_posts( 'posts_per_page=-1' );</code>, but I have absolutely no idea where.  (I am new to WordPress development.)</p>
  
  <p>I've looked all up and down my includes/feed-rss2.php, and while I see a lot of stuff that generates my feed, nowhere do I see something that actually queries for a list of posts.  In fact, there is no reference to "query" anywhere in the file!</p>
  
  <p>Can you direct me to the appropriate place?  Better yet, if there is some parameter I can stick in the URL when requesting the feed in the first place, that would be great.</p>
  
  <p>Thanks for any direction you can give.</p>