In this section of the contracts submission tutorial, we'll add comments to be included in the submission. Assuming you are already on the Step 7 page of your submission, you should see a button labeled "Add Comment", as shown below.
To add a comment, just click on the Add Comment button, and you will be presented with a text form window. Just type in your message and click the "Save" button. The Step 7 page will update with your comment.
Congratulations. You've now completed all the data-entry steps in the contract submission. In Part 7 of the tutorial, we'll complete Step 8, is where we'll validate the submission and then send to GCM.