Is it possible to see the list of articles in all the subcategories of a
category, in some sort of nested tree view? For example to see all the articles
in http://en.wikipedia.org/wiki/Category:History_of_Australia and all its
subcategories togethor on one page with headings for the subcategories. The
English wikipedia seems to be getting articles classified into ever-finer
categories, meaning ever more often I have to look in several categories to find
all the articles I (as a reader) think are related.