I found a super simple solution here:

http://blog.namran.net/2011/01/22/xml-beautify-using-perl-xmlwriter/

[download]

Basically, what one needs is this: 

  my $writer = new XML::Writer (
    OUTPUT => \$xml, DATA_MODE => 1,DATA_INDENT => 2
  );

[download]

In reply to Re^2: XML Writer indentation by Anonymous Monk
in thread XML Writer indentation by newPerlr

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