title: TNotebook or TPageControl
body: <p>I have an application using <code>TNotebook</code> to switch between different sub pages, that are shown.</p>
  
  <p>Now I have to extend this code a little bit (namely add a page and change sizes).</p>
  
  <p>I was told that <code>TNotebook</code> shouldn't be used anymore. In Delphi's help  I find "New applications should use TPageControl".</p>
  
  <p>My question: Should I refactor the code to use <code>TPageControl</code> instead of <code>TNotebook</code>? What are the disadvandtages of TNotebook?</p>