title: How to get rid of a vertical line in the editor pane of IntelliJ Idea?
body: <p>recently a gray vertical line appeared in about the middle of the editor pane of my IntelliJIdea Community Edition 13.1.4 probably due to some manipulations with the settings that I cannot remember. I cannot find how to get rid of it, which is annoying. Who can help?
  <img src="https://i.stack.imgur.com/VvyUm.png" alt="enter image description here">
  Thanks.</p>