The following typographical conventions are used in this book:
Indicates menu titles, menu options, menu buttons, and keyboard accelerators (such as Alt and Ctrl).
Indicates new terms, URLs, email addresses, usernames, hostnames, filenames, file extensions, pathnames, and directories.
Constant widthIndicates elements of code, configuration options, variables, functions, modules, databases, tables, columns, command-line utilities, the contents of files, or the output from commands.
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.