hierarchical module names

[Henning Thielemann]

From
 http://haskell.org/haskellwiki/How_to_write_a_Haskell_program#Hierarchical_source

there is a link to
 http://www.haskell.org/~simonmar/lib-hierarchy.html

It looks a bit out of date (no Control.Arrow, but DSP instead of Sound).
Is there a more current list?