> Someone mentionned python's library, if it corresponds to this [1], then I
> see no hierarchy there (OTOH nobody tells me that python users are actually
> screaming for a hierarchy on their list).

The Python library hierarchy is very flat, for example all markup
tools are presented into a tree of packages [1] for user convenience.

Nobody actually complains about this situation.


[1] http://docs.python.org/library/markup.html

-- 
Paolo
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:wq