Hello!
Microsoft provides cloud version of OneNote.
The same document could be retrieved from this service in the following ways:
1. As a *.one file from OneDrive web interface.
2. As an html document via MS Graph API.
The retrieved file from OneDrive is in OneNote Online format. Its document model is described in MS-ONE specification.
The html document uses the different model that is described in https://docs.microsoft.com/en-us/graph/onenote-input-output-html
So I think that there is an algorithm for converting of a document from one model to another.
Is it possible to publish this algorithm?
Thanks!
Sincerely, Alexei.