Screen shots of TreeDyn packages. Knowing an ID Study (e.g. S725) from TreeBASE, the TreeBASEinterf module (a) allows the fetching of selected tree(s) and their insertion in a TreeDyn document. The TreeIG package (b) allows the drawing of arcs facing the selected leaf labels. Graphical variables of arcs (color, curvation, tabulation) follow a user's definition possibly based on the distances between the leaves. The TreePAT package (c) enables the computation and the coloring of the distance matrix between leaves based on branch lengths. The TreeXY (d) package allows a dynamic linkage between trees and scatterplot matrices.