title: iterate over string constants
body: <p>I have predefined set of string constants. For each of them i want to write graphic. So I want to do something like that:</p>
  
  <pre><code>stocks = ['MSFT', 'INTC', 'GOOG']; // incorrect in matlab
  for stock = stocks
      ...
      figure;
      plotyy(....
      title(stock)
  end
  </code></pre>
  
  <p>The question is how to declare such string array and how to iterate over it?</p>