DWA - notebook section == WHAT under Notes client?

Under DWA, there is an option to have a Notebook stored.

Is this a section that can be accessed by a Notes client? or is it DWA only?

Subject: dwa notebook = notes journal

you have to create a journal in the notes client. The homepage will help facilitate that. You can synch them using the Actions - Domino Web Access - Synchronize Journal