The HTX linker is equipped to detect when documents have changed and to decide when re-linking is necessary. However, it takes a pragmatic approach to this in order to keep linking time to a minimum. As a result, there are occasions on which it may report that no documents need to be re-linked when this is not, in fact, the case.
This section is intended to help you understand when you need to re-link your hypertext documents and how to tell the linker to do this for you.