The following typographical conventions are used in this book:
- Italic
Used for filenames, directory names, and function names. It is also used for emphasis and for the first use of a technical term.
-
Constant width Used for code examples.
-
Constant width bold Used occasionally in code examples to highlight statements being discussed.
Tip
Indicates a tip, suggestion, or general note. For example, we’ll tell you if a certain feature is version-specific.
Warning
Indicates a warning or caution. For example, we’ll tell you if a certain operation has some kind of negative impact on the system.
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