Perl::Twig

Perl::Twig is perl module that reads and writes xml. convert2xml.pl depends on it.

1. To install it on OS X, issue the command: sudo port install p5-xml-twig
2. To install it on Linux, use on of these commands sudo apt-get install libxml-twig-perl, sudo zypper install perl-XML-Twig or sudo yum install perl-XML-Twig