This is Perl module HTML::TreeBuilder::LibXML.

INSTALLATION

HTML::TreeBuilder::LibXML installation is straightforward. If your CPAN shell is set up,
you should just be able to do

    % cpan HTML::TreeBuilder::LibXML

Download it, unpack it, then build it as per the usual:

    % perl Makefile.PL
    % make && make test

Then install it:

    % make install

DOCUMENTATION

HTML::TreeBuilder::LibXML documentation is available as in POD. So you can do:

    % perldoc HTML::TreeBuilder::LibXML

to read the documentation online with your favorite pager.

Tokuhiro Matsuno