This https://youtu.be/yOCcjHMsWD4 is a demo video that is a tentative new graph paper 2021 editor engine.
I have been added some setting options:
- Pen Thickness
- Background Color
- Save as Default
Add support for backup and restore.
Please use this feature in the case of geting a new android device.
File manager UI improvements: making each pageItemView widened.