Convention | Usage |
Boldface | Indicates keywords, symbols or punctuation that you must type as shown |
Italics | Represent a variable name for which you must supply an actual value |
[ ] (brackets) | Indicate an optional item |
{ } (braces) | Indicate an optional item that you can repeat as many times as appropriate |
| (vertical bar) | Used between items in a list to indicate that you should choose one of the items |