Property definitions

markdown2 $ MdHeading :: defaultinit
# A heading
class MdHeading
	super MdBlock

	# Heading level (from 1 to 6)
	var level: Int

	# Is this heading in the setext format in the original source?
	var is_setext = false is optional

	# Does this heading has an atx trailing in the original source?
	var has_atx_trailing = false is optional

	redef fun to_s_attrs do return "{super}, level={level}"
end
lib/markdown2/markdown_ast.nit:262,1--276,3