title: Alternative iOS layouts for portrait and landscape using just one .xib file
body: <p>Using interface builder in xcode and just one .xib file, how can I create alternate layouts when rotating between landscape and portrait orientations?</p>
  
  <p><strong>See diagram of differing layouts</strong>
  <img src="https://i.stack.imgur.com/UZofK.png" alt="enter image description here"></p>
  
  <p><strong>N.b</strong>. the green view/area would contain 3 items flowing horizontal in landscape and in portrait those 3 items would flow vertically within the green view/area.</p>