The tutorial is an introduction to TreeDyn, which organize graphical functions
into 8 families : Navigation, Figuration, Annotation, Identification, Conformation, Abstraction, Reflection and Illustration.
There is 3 more groups called Import/Export, Scripting and Library. The tutorial #01 give examples on how to use several
functions from these families, either by using tools represented by icons and are useable "on the fly" to the graphic elements
and by using contextual menus linked to graphicals items. Once you have loaded a tree, you can access each step of the tutorial independantly from the others.