Looking for a XML module accessing names

[luciano de souza <luchyanus@...>]

Hello all,

Some time ago, someone here has told about an intersting XML library.
I lost the files and I lost also the name. It allows to do something
like:

<person>
<contact>
<name>Luciano</name>
<e-mail>luchyanus</e-mail>
</contact>
<groups>
</name>lua-l</name>
<name>lua-br</name>
</groups>
</person>

I don't remember exactly how to iterate, but it's something similar to:

for name in xml.person.contact.name do
print(name)
end

The difference of this library is that we can access the elements by
the name in stead of index. Does someone know the name of this module
and where can I download it?

Regards,

Luciano