They're used to create links within a page
padding
This is a link to aforementioned anchor
If this post was too big to fit on your screen, clicking on that link would scroll the page to view "This is an anchor"
:o
Testing
Test
Test
Test
Test
http://www.powdertoy.co.uk
ANCHOR BRO
idk how to post link to anchor
Also, a bug: The editor likes advancing rows a lot.
Try | doing | this | with | the | editor! |