To help you get the most from the text and keep track of what's happening, we use a number of conventions throughout the book: As for styles in the text:
We present code in two different ways:
We use a monofont type with no highlighting for most code examples. We use bold to emphasize code that's particularly important in the present context.
The pencil icon indicates notes, tips, hints, tricks, or asides to the current discussion.
Boxes with a warning icon like this one hold important, not-to-be forgotten information that is directly relevant to the surrounding text.