title: Eclipse: How can I close this bar?
body: <p>How can I close this bar (marked red)?
  And how is it called?</p>
  
  <p><img src="https://i.stack.imgur.com/uK6bW.png" alt="enter image description here"></p>
  
  <p>I don't know how I opened it, and I can't find the option to close it again...
  Thanks for your help.</p>