Lines and paragraphs are automatically recognized. The <br /> line break, <p> paragraph and </p> close paragraph tags are inserted automatically. If paragraphs are not recognized simply add a couple blank lines.
Quick Tips:
Two or more spaces at a line's end = Line break
Double returns = Paragraph
*Single asterisks* or _single underscores_ = Emphasis
**Double** or __double__ = Strong
This is [a link](http://the.link.example.com "The optional title text")