Conventions Used in This Book
The following typographical conventions are used in this book:
Italic
-
Used for the names of files and directories. It is also used for URLs, for emphasis, and for the first use of a technical term.
Constant width
-
Used for code examples, the names of columns, variables, tables, procedures, functions, and packages, and to show the contents of files and the output of commands.
Constant width italic
-
Used in syntax descriptions or other places to indicate where user-supplied (or programmer-supplied) text would appear.
Constant width bold
-
Indicates user input in examples showing an interaction. Also used in some programming examples to highlight code fragments explained by neighboring paragraphs.
UPPERCASE
-
In syntax descriptions and source code, usually indicates keywords.
lowercase
-
In syntax descriptions and source code, usually indicates user-defined items such as variables.
[ ]
-
In syntax descriptions, square brackets enclose optional items.
{ }
-
In syntax descriptions, curly brackets enclose a set of items from which you must choose only one.
|
-
In syntax descriptions, a vertical bar separates the items enclosed in curly brackets, as in {TRUE | FALSE}.
...
-
In syntax descriptions, ellipses indicate repeating elements.
|
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