It is best to annotate in the online reader and then export the annotations as they will go away once the loan period expires.
In the Annotation Panel, highlight the ones to delete and click the trashcan icon.
In the Ebook, double-click on highlights and notes and click the trashcan icon.
Go to your Bookshelf.
Each Ebook will have four icon options. Select the last one with the three dots. Then select “Export Notes” in the dropdown menu. : any highlighted text will not be included in the export.
Annotations will be downloaded as a .txt file.