Terrain

The terrain class may be stripped out of the newest versions of Ogre 2.0 and 2.1

Terrain tutorial

http://www.ogre3d.org/tikiwiki/tiki-index.php?page=Basic+Tutorial+3&structure=Tutorials

Paging

http://www.ogre3d.org/forums/viewtopic.php?f=2&t=60456