title: Does JSON allow positive sign for numbers?
body: <p>After examining the JSON.org railroad (grammar) definition, the number definition provides the negative sign (-), but omits recognizing the positive (+) sign - is this an omission from the diagram, or does JSON disallow postitive sign (+) for numbers?</p>
  
  <p><em>The exponent allows optional positive (+) and negative (-) signs, so it would seem to save little to provide recognition of (+) for the number...</em></p>