title: How to open a new tab in same browser using robot frame work
body: <p>As far as I know there is no straight keyword to open new tab in selenium2library. I have seen the below code which opens a new tab in IE(default browser)for the given URL </p>
  
  <pre><code>webbrowser.open_new_tab(url)
  </code></pre>
  
  <p>But I want to write a keyword which opens a new tab on current running browser (it may be any browser).</p>