You can write as a paper notepad in an analog sense.
In addition to its function for hand-drawn pen and eraser.
You can place a photo or image, such as rotation, scaling can be arranged to enter text.
Not only as memo pad, and it instead of notebook to use at work.
It is also a good lecture notes in school.
Because you can categorize the notes that you create, and it's easy to look back in the past as well.
This will prevent the scattering of the notes.
If you want to use as a notebook, it is a good choice for phablets and tablets.