Hang about, I've just found the Annotations, and highlighting, in the section on the far right of the Calibre main library screen that shows the book you've highlighted, and the title, format and metadata info.
But I haven't found it at the back of the Calibre version of the book.
Golly, if I end up with say 100 annotations or notes, and even more highlights - not an unnusual proposition in non-fiction research, then surely they don't all sit there!!! Yikes ...
I suppose this really is a question for the Calibre forum, eh
