Mesquite (http://mesquiteproject.org/mesquite/mesquite.html) is particularly
well suited for examining the evolution of characters on phylogenies.
-#### Existing libraries for tree
manipulation and rendering trees
+#### Existing libraries for tree
ape (http://ape.mpl.ird.fr) - R tools for manipulating and analyzing trees,
extensive functionality for rendering trees and showing data on the trees. It
entire new groups were discovered and then expanded.
- When the slider is all the way to the left there would be <50 species, when
to the right there would be hundreds of thousands or millions. The layout would
dynamically change to accommodate this change in density.