If you type in references to other parts of the document, those references can easily get out of date if you reorganize the order of topics, add or remove material, or reword a heading, OOo provides three ways to ensure that your references are up to date, by inserting links to other parts of the same document or to a different document.
The first two methods have the same result if you Control+click the link when the document is open in OOo: you are taken directly to the cross-referenced item. However, they also have two major differences:
- The text in a hyperlink does not automatically update if you change the text of the linked item (although you can change it manually), but changed text does automatically update in a cross-reference.
- When using a hyperlink, you do not have a choice of the content of the link (for example text or page number), but when using a cross-reference, you do have several choices, including bookmarks.