title: Can I pop up a help "speech bubble" over my Windows Form?
body: <p>I have a Windows Form with various controls on it, all positioned using <code>TableLayoutPanel</code> and the like.</p>
  
  <p>When the user first uses my form, I'd like to pop up a speech-bubble type thing with information on how to use the form. I say speech-bubble because I want the "tail" to point at the part of the form I'm explaining. This would appear over part of the form (obscuring some controls). </p>
  
  <p>Ideally, I'd like this speech-bubble to be oval/rounded, with transparent corners so that it looks more visually appealing, rather than being purely rectangular.</p>
  
  <p>The popup should disappear after a short interval, or immediately if the user interacts with the controls on the form. </p>
  
  <p>How can I do that?</p>