In chapter 4 McCloud explains how to show the passage of time in comics. He gives a few examples like a blank icon or to show a longer period of time, a longer blank icon. He also describes the importance of the icons. I would have never thought of this on my own. McCloud says how important the icons are, they contain all of the information wether it is black and white on the page or more abstract, like the passage of time. Next McCloud explains the flow of comics. That we read and interpret them from left to right and from top to bottom, we perceive the icons previous to the current frame as things in the past and icons to come are perceived as the future. the final points made are the ways different cultures and time periods show motion and sound.