Prodraft should stick a pin after writing notes, which has its own special suffix and is easy to lose. If you can't find it, you can look at the middle part, which is the focus of the diagonal of the canvas.

The specific steps for prodraft to save comments are: click the plus sign to create a new draft or comment, click the plus sign in the upper right corner, select data in the operation interface, and click Save.

Prodraft is a draft paper software on the tablet computer. The interface is very refreshing. Starting from the center, the whole canvas can be enlarged to 100% at the maximum and reduced to 3% at the minimum. It supports dragging and dropping pictures, videos, etc. Can be exported to pdf format. Shortcomings also exist. Sometimes, when you go back to the home page and then enter the document, there is no way to undo it. In addition, in a few cases, the interface will lose its response and the synchronization function will not be supported.