title: Swift Playground - How to use "thread return -x"
body: <p>The following error was invoked when I wrote <code>case 2841001 ... 393200 :</code> I figured out my error (having an extra digit in the first number, copy paste error), but I would love to learn how to use "thread return -x", where do I configure that?</p>
  
  <pre><code>Playground execution aborted: Execution was interrupted, reason: EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode=0x0).
  The process has been left at the point where it was interrupted, use "thread return -x" to return to the state before expression evaluation.
  </code></pre>