[dev 040109] With a multi-page document, repeated
Page Down's used to scroll down to the end, and
when it could scroll no more, finally just move
the caret at the end of the document.

Now it seems that the document is scrolled all the
way to the end, but the caret is left somewhere in
the last page of the document, and subsequent Page
Down's do not move it. To go to end of document,
you need to press Ctrl-End, which is annoying.

Note that a final Page Up still does put the caret
at the beginning of the document, however. So the
behavior is asymmetric.

True in both text/x-java and text/xml.