1 In the following example we will im[ple]ment support for [fenced code blocks][] which are part
2 of the [github flavored markdown][gfm].
4 [fenced code blocks]: https://help.github.com/articles/github-flavored-markdown#fenced-code-blocks
5 "Fenced code block feature of github flavored markdown"
6 [gfm]: https://github.com
7 [unused]: https://github.com/unused
11 [this]: https://github.com/cebe/markdown
13 ref on end of line [this]
23 [multi line]: http://example.com