Italic
Used for file and folder names, URLs, and new terms when they are defined.
Constant width
Used for code examples and the names of variables, handlers, and commands.
Constant-width italic
Used for placeholders in code, where the programmer would supply the actual name of something.
Constant-width bold
Used in code examples, for user input from the command line; often seen in conjunction with %, which symbolizes the shell prompt.
-- code comment in italic
Used in code examples, for my comments to the reader about the code or its effect.
-- code comment in bold
Used in code examples, to represent the result (output) of executing the line.
vertical bar |
Used in syntax templates to indicate alternatives.
[square brackets]
Used in syntax templates to indicate that something is optional.
Used to indicate a line of code that continues; these lines will be unbroken in your code but were too long to fit on the printed pages of this book.
