-- HEADER --
Introduction
This document is used to test the removal of duplicated lines.

Heading 1
Some text here in heading 1.

Heading 2
Some other text here in heading 2.

        - Page 1 -
-- FOOTER --

-- HEADER --
Heading 3
Some text here in heading 3.

        - Page 2 -
-- FOOTER --

-- HEADER --
Extra lines test: These should be kept.





        - Page 3 -
-- FOOTER --
