spec.txt		spec.txt
	---		---
	title: CommonMark Spec		title: CommonMark Spec
	author: John MacFarlane		author: John MacFarlane
	version: 0.24		version: 0.25
	date: '2016-01-12'		date: '2016-03-24'
	license: '[CC-BY-SA 4.0](http://creativecommons.org/licenses/by-sa/4.0/)'		license: '[CC-BY-SA 4.0](http://creativecommons.org/licenses/by-sa/4.0/)'
	...		...
	# Introduction		# Introduction
	## What is Markdown?		## What is Markdown?
	Markdown is a plain text format for writing structured documents,		Markdown is a plain text format for writing structured documents,
	based on conventions used for indicating formatting in email and		based on conventions used for indicating formatting in email and
	usenet posts. It was developed in 2004 by John Gruber, who wrote		usenet posts. It was developed in 2004 by John Gruber, who wrote
	skipping to change at line 302		skipping to change at line 302
	.		.
	<ul>		<ul>
	<li>		<li>
	<p>foo</p>		<p>foo</p>
	<p>bar</p>		<p>bar</p>
	</li>		</li>
	</ul>		</ul>
	````````````````````````````````		````````````````````````````````
	```````````````````````````````` example		```````````````````````````````` example
	>→foo→bar		- foo
			→→bar
			.
			<ul>
			<li>
			<p>foo</p>
			<pre><code> bar
			</code></pre>
			</li>
			</ul>
			````````````````````````````````
			```````````````````````````````` example
			>→→foo
	.		.
	<blockquote>		<blockquote>
	<p>foo→bar</p>		<pre><code> foo
			</code></pre>
	</blockquote>		</blockquote>
	````````````````````````````````		````````````````````````````````
	```````````````````````````````` example		```````````````````````````````` example
			-→→foo
			.
			<ul>
			<li>
			<pre><code> foo
			</code></pre>
			</li>
			</ul>
			````````````````````````````````
			```````````````````````````````` example
	foo		foo
	→bar		→bar
	.		.
	<pre><code>foo		<pre><code>foo
	bar		bar
	</code></pre>		</code></pre>
	````````````````````````````````		````````````````````````````````
			```````````````````````````````` example
			- foo
			- bar
			→ - baz
			.
			<ul>
			<li>foo
			<ul>
			<li>bar
			<ul>
			<li>baz</li>
			</ul>
			</li>
			</ul>
			</li>
			</ul>
			````````````````````````````````
	## Insecure characters		## Insecure characters
	For security reasons, the Unicode character `U+0000` must be replaced		For security reasons, the Unicode character `U+0000` must be replaced
	with the REPLACEMENT CHARACTER (`U+FFFD`).		with the REPLACEMENT CHARACTER (`U+FFFD`).
	# Blocks and inlines		# Blocks and inlines
	We can think of a document as a sequence of		We can think of a document as a sequence of
	[blocks](@)---structural elements like paragraphs, block		[blocks](@)---structural elements like paragraphs, block
	quotations, lists, headings, rules, and code blocks. Some blocks (like		quotations, lists, headings, rules, and code blocks. Some blocks (like
	skipping to change at line 1137		skipping to change at line 1181
	baz		baz
	.		.
	<p>Foo		<p>Foo
	bar</p>		bar</p>
	<hr />		<hr />
	<p>baz</p>		<p>baz</p>
	````````````````````````````````		````````````````````````````````
	or use a thematic break that cannot count as a [setext heading		or use a thematic break that cannot count as a [setext heading
	line], such as		underline], such as
	```````````````````````````````` example		```````````````````````````````` example
	Foo		Foo
	bar		bar
	* * *		* * *
	baz		baz
	.		.
	<p>Foo		<p>Foo
	bar</p>		bar</p>
	<hr />		<hr />
	skipping to change at line 8284		skipping to change at line 8328
	If we encounter a new block start, we close any blocks unmatched		If we encounter a new block start, we close any blocks unmatched
	in step 1 before creating the new block as a child of the last		in step 1 before creating the new block as a child of the last
	matched block.		matched block.
	3. Finally, we look at the remainder of the line (after block		3. Finally, we look at the remainder of the line (after block
	markers like `>`, list markers, and indentation have been consumed).		markers like `>`, list markers, and indentation have been consumed).
	This is text that can be incorporated into the last open		This is text that can be incorporated into the last open
	block (a paragraph, code block, heading, or raw HTML).		block (a paragraph, code block, heading, or raw HTML).
	Setext headings are formed when we see a line of a paragraph		Setext headings are formed when we see a line of a paragraph
	that is a setext heading line.		that is a [setext heading underline].
	Reference link definitions are detected when a paragraph is closed;		Reference link definitions are detected when a paragraph is closed;
	the accumulated text lines are parsed to see if they begin with		the accumulated text lines are parsed to see if they begin with
	one or more reference link definitions. Any remainder becomes a		one or more reference link definitions. Any remainder becomes a
	normal paragraph.		normal paragraph.
	We can see how this works by considering how the tree above is		We can see how this works by considering how the tree above is
	generated by four lines of Markdown:		generated by four lines of Markdown:
	``` markdown		``` markdown
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