Pressing the page down button does nothing.

Page Down looks up, Delete looks down, End resets the view.

Alternately you can set the game up in mouse look mode with GrayFace MM6 Patch (you'll need to [url=http://pcgamingwiki.com/wiki/Might_and_Magic_VI:_The_Mandate_of_Heaven#No_music_.28GrayFace_MM6_Patch.29]adjust the music files[/url] otherwise music doesn't work).

Phew thanks, but the manual said otherwise? Why is that?

Manuals were sometimes finalised before the game itself so some information could be incorrect or absent; some games included a readme on the disc explaining such errors.

Ah I see what you mean, same thing happened with Dark souls mess of a manual