This is a level 1 heading that's centered

emphasized text

This is a paragraph

we're skipping some lines using a self-closing tag

before ending the second paragraph

the next tag is a horizontal-rule which is also self-closing

the third paragraph is started this tag foo is not an html tag but could be an xml tag

the fourth paragraph
skips some lines and opens 3 tags

before it starts to close them

they're all closed now

it ends with the fifth paragraph

and finally closes the body and the document