Inherent to layout and typographic design is the use of the paragraphs. Usually other layout elements such as headers, sub headers, captions, quotation marks, quotes, captions, margins, page numbers tend to get all the attention the designer has to spare. Sometimes this is due to the project requirements. In the case of web layouts it is due to browser support or lack thereof, and issues with legibility. A paragraph must be read. It is after all the reason paragraphs exist—to be read.
In its simplest definition a paragraph is a collection of lines placed on top of each other and neatly arranged within a certain width forming a nice looking rectangle. If you take a moment to think about it, a paragraph is either a horizontal rectangle or it is a vertical rectangle in the case of narrow columns. The importance of seeing form in a rectangle is what allows designers to create experimental layouts or even simple layouts with some anomalies that call our attention. Sometimes these anomalies are perhaps out denting the first line, changing to bold weight the first line, perhaps doing both of those things in a middle line, indenting few lines creating another rectangle in the negative space, and sometimes these rectangles can be placed in a diagonal creating interesting compositions.
A paragraph must be read. It is after all the reason paragraphs exist—to be read.