```
% pandoc -t markdown --reference-links
All because of [1](#one) link...

[This](#foo) will break Pandoc.

[This](#bar) will make you laugh.
^D
All because of [1] link...

[This] will break Pandoc.

[This][2] will make you laugh.

  [1]: #one
  [This]: #foo
  [2]: #bar
```