1. Can zoom and pan while writing, like real paper.
2. Support multi touch.
3. Support landscape and portrait orientation.
4. Single Cell mode let you write letters cell by cell.
5. Projector mode let you write in high-def then scaled down to paper instantly.
6. Pen and Brush, Eraser, 216 colors.
7. Folder structure.
8. HTTP file transfer.
9. Zip and Unzip.
10. Automatically creating thumbnails.
11. Email, saving to photo album.
12. Paper size can be larger than screen in Single Cell mode.
13. Undo and redo 10 steps.
14. Floating color pallette.
15. Arrow end option.
16. Integrate Facebook, Twitter and Sina Weibo.