This is [an example][id] reference-style link. This is [another] [foo] reference-style link. This is [a third][bar] reference-style link. This is [a fourth][4] reference-style link. [id]: http://example.com/ "Optional Title Here" [foo]: http://example.com/ (Optional Title Here) [bar]: http://example.com/ (Optional Title Here) [4]: "Optional Title Here"