When checked, this print option will cause an additional annotations summary section to be printed after the end of the document itself. This annotations summary section lists all the annotations (notes, comments, highlights, and others) that are present in the document, sorted by page order.
While the annotation summary is added to your printed document, it is not added to the original document and is discarded once the Print Dialog has been closed. If you would like to view or save a copy of this summary, you can use the Print Dialog options PDF > Open PDF in Preview or PDF > Save as PDF…
Note: You can select specific annotations to print, such as Highlights, by filtering annotations using the Show menu at the bottom of the Sidebar. (Sidebar).
Found under Append Annotations Summary in the print dialog. When checked, this print option will not print any of the original document, it will only print a list of annotations added to the document, similar to the Annotations view in the sidebar. Included items are Text, Notes, Comments, Links, Highlights, Attachments, and Sound attachments.