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should be included0 as a chapter	input.md	/^  # should be included0 as a chapter$/;"	c
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should be included1 as a chapter	input.md	/^ # should be included1 as a chapter$/;"	c
should	input.md	/^#should NOT be included2 as a chapter$/;"	h	chapter:should be included1 as a chapter
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title 1	input.md	/^   # title 1$/;"	c
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title 3	input.md	/^   # title 3$/;"	c
title 4	input.md	/^ ### title 4$/;"	S	chapter:title 3
title 5	input.md	/^ #### title 5$/;"	t	subsection:title 3""title 4
title 6	input.md	/^ ##### title 6$/;"	T	subsubsection:title 3""title 4""title 5
title 7	input.md	/^ ###### title 7$/;"	u	l4subsection:title 3""title 4""title 5""title 6
