title: What does a blue circle on the "Run" button in Matlab mean?
body: <p>Title pretty much says it all.  I am running R2015a, and got this to appear in my editor.  There is a small blue circle appearing on the "Run" button.  I've never seen this before, and can't find any documentation on the mathworks website that explains it's meaning.</p>
  
  <p>What does this blue circle with 3 dots mean?</p>
  
  <p><a href="https://i.stack.imgur.com/UGsiY.png" rel="noreferrer"><img src="https://i.stack.imgur.com/UGsiY.png" alt="enter image description here"></a></p>