What is a cross-reference?
You probably know in general what a cross-reference is. Whenever you write, see page 15 or in Chapter 5 or in the Further Developments section, you are using a cross-reference. If you insert such cross-references as ordinary text, you will have to update them manually if pagination changes or Chapter 5 becomes Chapter 6 or you change the heading Further Developments to Later Developments. Word, however, provides a way to insert a cross-reference so that it can be updated semi-automatically when the target changes.
