There's also a modular structure that lets the material be combined, grouped, and browsed in a rich variety of ways. The modular structure makes it easier for you to browse and skim without missing anything you'd consider significant. The site demo and tour illustrates these abilities in more depth. If it isn't a button, it isn't for clicking. Text is for reading.
Pictures are for looking at.
If it's in color, it's a synopsis or title. Primary-level text is always colorless.