The answer to this is the bullet. You can use bullet form in order to give emphasis to certain points within the document. Let us say that you would like to show some rules, you can use bullet points instead of numbers to highlight those rules. This is better as compared to using just one paragraph in order to state all of your rules.
People would not want to read something that is written in just one document. It will only make them bored. Bullet points also make documents easier to read because there are some breaks and spaces. According to research, the breaks can make people condition their minds to understand what they are reading more.