We accidentally discovered that a tree-like view of superclasses is referred to as "Inheritance Tree", both in code and generated documentation. This phrase is somewhat inaccurate; we should find a better phrase.

See the attached image. The relevant area is highlighted. Note that the phrase "Inheritance Tree" is used as a tooltip when the mouse pointer hovers over the respective area.

ATTENTION: do not confuse "Inheritance Tree" with the "TREE" page, which is accessible from the top-level navigation bar.