title: Switch cursor position in visual block insert mode
body: <p>Is there a keystroke, similar to <code>v_o</code>, to switch cursor position in visual block insert mode?</p>
  
  <p>Example: <code>|</code> cursor position</p>
  
  <pre><code>|line1
  line2
  line3
  </code></pre>
  
  <p>Hit <code>Ctrl+v</code> and go down to line 3</p>
  
  <pre><code>line1
  line2
  |line3
  </code></pre>
  
  <p>Hit <code>I</code></p>
  
  <pre><code>|line1
  line2
  line3
  </code></pre>
  
  <p>Now the cursor is back at line 1.</p>
  
  <p>I want to stay the cursor in line 3. </p>