Conventions Used in This Book
The following typographical conventions are used in this book:
- Italic
Indicates new terms, URLs, email addresses, filenames, and file extensions.
Constant widthUsed for program listings, as well as within paragraphs to refer to element and attribute names, program examples, attribute value literals, start- and end-tags, and source code example text.
Constant width boldShows commands or other text that should be typed literally by the user.
Constant width italicShows text that should be replaced with user-supplied values or by values determined by context. An example is
filename, where the word “filename” is a placeholder for the actual filename.
Tip
This icon signifies a tip, suggestion, or general note.
Caution
This icon indicates a warning or caution.
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