Syncing on multiple devices
Method 1: Built-in iCloud data transfer
Please refer to Q1.
Method 2: Handoff transmission
Regarding the use of the Handoff function, please refer to Apple’s official introduction.
Method 3: Airdrop transmission
After exporting the backup, share it to other devices and open it with MarginNote.
For how to export the backup, please refer to q2-how-to-export-a-backup