Unexpected and unintuitive behavior of Previous and Next links in tutorial. For example:

1. Go to

http://docs.oracle.com/javase/tutorial/java/generics/QandE/generics-questions.html

2. Click Next. You end up here, the first page of the next lesson:

http://docs.oracle.com/javase/tutorial/java/package/index.html

3. Click Previous. You do not end up on the last page of the previous trail. You end up on the *first* page of the previous trail:

http://docs.oracle.com/javase/tutorial/java/generics/index.html