The Perl program given on this page is an example, for educational purposes only, of how to use the LWP::UserAgent and HTML::TreeBuilder modules to download a web page and extract information from it. Don't use this program to automatically extract data from XE.com, since the site strictly forbids this. The Perl program is just a simple example to get you started on how to fill in a web form and using the POST method to get the result back.
Read the rest of Currency converter interface.
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