Annotating your thesis before the viva can help you as you read and prepare. You then have an enhanced version of your thesis with you for the viva. Adding bookmarks or tabs to chapters and important sections can help you to find things. Highlighting references or underlining typos, as well as making notes in margins, can add layers of useful information as you refer to your thesis.
Before you sit down to add anything to your thesis though, take a few moments to create a system for yourself. Just reflect on a few simple questions then make a few simple decisions.
- What do you need to add?
- What options do you have so you can usefully and simply add what you need?
- What will you do for each option?
Keep things simple, clear and consistent.