normal

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla pellentesque metus eget massa feugiat lobortis.

pre-wrap

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla pellentesque metus eget massa feugiat lobortis.

pre-line

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla pellentesque metus eget massa feugiat lobortis.

nowrap

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla pellentesque metus eget massa feugiat lobortis.

pre

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla pellentesque metus eget massa feugiat lobortis.

Examples above are applied to the following HTML (squares represent space characters):
☐☐<p>
☐☐☐☐Lorem ipsum dolor sit amet, consectetur adipiscing elit.
☐☐☐☐Nulla pellentesque metus eget massa feugiat lobortis.
☐☐</p>