- [Ability to write arrows](/en/Ability%20to%20write%20arrows)
- This is the illustration phase
It is rather important to be able to enter pen input on a sticky note.
Really?
Only GroupStateItem can be a parent now, but I wonder if there should be a hasChildren type in the future, since PieceStateItem can have PathStateItem in the future when we can handwrite on stickies.
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