To update a draft, select that option from the draft's right side options menu.
This takes you to a page with an editing window that includes the content of your current draft. When you are finished making your changes to either the draft title or content, click the "Update Draft" button at the top or bottom of the page. Clicking the "Start Over" button will return the draft to its original state.
To delete a draft, selecting that option from the draft's right side options menu.
This will take you to a page that includes your draft and the question "Do you want to delete this draft?" If yes, click the "Delete" button, if no, click "Cancel."