title: VSCode: how to undo split screen and show just current file?
body: <p>VSCode provides sweet shortcuts for manipulating (splitting and rearranging) screens:</p>
  
  <ol>
  <li>Press <kbd>Ctrl</kbd> + <kbd>\</kbd> to split your screen in two.</li>
  <li>Press <kbd>Ctrl</kbd> + <kbd>Number</kbd> to focus on one of the screeens</li>
  <li>Press <kbd>Ctrl</kbd> + <kbd>Shift</kbd> + <kbd>0</kbd> to change vertical/horizontal split</li>
  </ol>
  
  <p>However, how do I remove all the split screens and just show the currently focused one?</p>
  
  <p><strong>Example:</strong> say, I press <kbd>Ctrl</kbd> + <kbd>\</kbd> two times (gives me three vertical screens), then press <kbd>Ctrl</kbd> + <kbd>2</kbd> to select middle screen. What should I press now to make left and right screen disappear and middle screen occupy the whole space? In Emacs, that would be <kbd>Ctrl</kbd> + <kbd>X</kbd> + <kbd>1</kbd>.</p>