title: How to add shortcodes in editors' text tab?
body: <p>Look the below image to get what I mean exactly.</p>
  <p><a href="https://i.stack.imgur.com/Gq0ju.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Gq0ju.jpg" alt="tab text" /></a></p>
  
  <p>I know how to add shotcodes into tinymce, but I do not know how to add shortcodes to text tab.  I like to add my shortcodes beside the &quot;fullscreen&quot; button. Any solutions?</p>