This book uses the following typographical conventions:
| Typographic | Usage |
|---|---|
| Bold |
|
| Italic |
|
| Constant width | Examples and information that the system displays appear in constant width typeface. |
| [ ] | Brackets enclose optional items in format and syntax descriptions. |
| { } | Braces enclose a list from which you must choose an item in format and syntax descriptions. |
| | | A vertical bar separates items in a list of choices. (In other words, it means "or.") |
| < > | Angle brackets (less-than and greater-than) enclose the name of a key on the keyboard. For example, <Enter> refers to the key on your terminal or workstation that is labeled with the word Enter. |
| ... | An ellipsis indicates that you can repeat the preceding item one or more times. |
| <Ctrl-x> | The notation <Ctrl-x> indicates a control character sequence. For example, <Ctrl-c> means that you hold down the control key while pressing <c>. |
| \ | The continuation character is used in coding examples in this book for formatting purposes. |