Since the main goal is to save you time and money, every note has a closing time. After the note closes there will be no option re-edit the note. Mr. Note is fully aware to the fact that most of our everyday tasks are repetitive (e.g. weekly shopping list) and therefore all the lists are saved and easy to revive.
So next time you find yourselves disturbed by a simple task- let Mr. Note do the job for you!