title: comment out lines in simple json to put some description
body: <p>How do I add comments in a simple JSON file which be read from s3 in AWS. This is my JSON file.</p>
  
  <pre><code>{
      "Parameters": {
          "KeyPairName": "mykey",
          "InstanceTypes": "t2.micro",
  
          "prodImageIds": "ami-d7abd1b8",
          "testImageIds": "ami-e41b618b",
          "devImageIds": "ami-8f8afde0"
      },
      "StackPolicy": {
          "Statement": [
              {
                  "Effect": "Allow",
                  "NotAction": "Update:Delete",
                  "Principal": "*",
                  "Resource": "*"
              }
          ]
      }
  }
  </code></pre>