Foo [bar] [1]. Foo [bar][1]. Foo [bar] [1]. [1]: /url/ "Title" With [embedded [brackets]] [b]. Indented [once][]. Indented [twice][]. Indented [thrice][]. Indented [four][] times. [once]: /url [twice]: /url [thrice]: /url [four]: /url [b]: /url/ With [angle brackets][]. And [without][]. [angle brackets]: <http://example.com/> "Angle Brackets" [without]: http://example.com/ "Without angle brackets." With [line breaks][] and [line breaks][] with one space. and [line breaks[] with two spaces. [line breaks]: http://example.com "Yes this works" [short ref] [short ref] [short ref]: http://example.com "No more hanging empty bracket!" [a ref] [a ref]: http://example.com "Title on next line."