10. The computer-readable storage of claim 8 , further including converting a highlight that does not contain any words or objects to a comment in the first document.
8. The computer-readable storage of claim 7 , wherein mapping the annotations onto the first document includes determining words and/or objects that are highlighted in the second document, performing a word search in the first document for the determined highlighted words and/or objects to find matching words and/or objects and highlighting the matching words and/or objects in the first document.