Vue d' Esprit is a 3D app
Vue d' Esprit is a 3D application - Anna uses it to create her realistic mountain terrains for her mapping. Look at her Greyhawk maps to get an idea.
3D is great for mapping, but a completely different animal to other types of graphics applications - although I've used 3D apps for many years, its a serious learning curve compared to other types of mapping.
Vue is great for creating realistic terrains, plantlife, forests, mountains and water. Think of Bryce another 3D app, only different.