This is my first paragraph. I may even write another if things go well. The words are flowing freely. Notice how I use line breaks for readability, and how the browser ignores them.
Uh-oh, writer's block set in. This is a short paragraph.
Some times you just need
to break things up.
Tragic, but true.
Some tags are self-closing, like br, img, and
hr.
Aligning start and end tags greatly aids readability. It also makes the source code easier to modify. Proper nesting of tags, just like parentheses and brackets in arithmetic expressions, is necessary for correctness.