The OneNote 1.1 SimpleImport XML Schema
The Office 2003: XML Reference Schemas download is now available. The download includes a copy of the OneNote import schema, as well as the complete element, type, and attribute documentation we posted online awhile back. It also include an introduction detailing how to use the schema to import content into OneNote.
To view the OneNote schema reference help online, see the Microsoft Office OneNote 2003 Software Development Kit (SDK) on the Office Developer Center. The SDK contains reference documentation for the OneNote SimpleImport XML Schema, including descriptions of elements and types.