The following conventions are used in this book:
Used for program names, example URLs, and database entities, and for new terms when they are defined.
Used for code examples, functions, statements, and attributes, and to show the output of commands.
Used to indicate variables within commands and functions.
Constant width bold
Used to indicate emphasis in program code.
This icon designates a note, which is an important aside to the nearby text.
This icon designates a warning relating to the nearby text.