Conventions Used in This Book
The following typographical conventions are used in this book:
- Italic
Used for filenames, directory names, and URLs. It is also used for emphasis and for the first use of a technical term.
-
Constant width Used for examples and to show the contents of files and the output of commands.
-
Constant width bold Indicates user input in examples showing an interaction (e.g., a Listener session).
- UPPERCASE
In syntax descriptions, usually indicates keywords.
- lowercase
In syntax descriptions, 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 {ON | OFF | YES | NO | TRUE | FALSE}.
- ...
In syntax descriptions, ellipses indicate repeating elements. In addition, since repetition is rarely mandatory, the second occurrence of a syntax element is enclosed within square brackets. The following syntax, for example, indicates that you can have a comma-delimited list of naming methods:
naming_method[,naming_method...]Given this syntax, any of the following would be acceptable:
TNSNAMES
TNSNAMES, ONAMES
TNSNAMES, ONAMES, HOSTNAME
Tip
Indicates a tip, suggestion, or general note. For example, we’ll tell you if a certain setting is version-specific.
Warning
Indicates a warning or caution. For example, we’ll tell you if a certain ...