A clearly structured piece of writing is divided into paragraphs.
A paragraph is a unit of text that puts across one main concept. The point of a paragraph is to distinguish one set of content from another – it’s not about making the page look less cluttered! A paragraph may be just two lines long; it may also take up a whole page, but what makes it a paragraph is the unity and coherence of its main theme and the related ideas that come under this theme.
Your writing will be more clear if each paragraph begins with a sentence that summarises what the whole paragraph is about (known as a topic sentence).
Next page: section headings