From RSS Bandit forums:
"There is a small button in the separation between the Headlines pane and the reading pane. It toggles on/off the Headlines pane.
Could you add a button to toggle on/off the Reading pane?"
"Can I second this request? I could really do with some way of switching the reading pane off but I'm struggling to find a way!"
"Sounds sensible to me. I think you could actually quite nicely split that button into two sides - the left side would have an arrow pointing up which would hide the feed details pane and move the bar to the top (current behaviour) and the right side would have an arrow pointing down which would move the bar to the bottom and hide the reading pane."