Task Notes" are extra details and text that you can add to your Tasks. This helps you to provide more information about the Task, such as extra steps or supplies necessary to complete the Task. This also helps you to add details to your Task without cluttering up the look of your To Do List. See the image below:

However, you also have the option of showing your Task notes along with your Task when you're viewing your To Do List. To get your Task notes to show in the list follow the steps in the image below:

Once this feature is turned on your Tasks will look like this in your To Do List: