The conventions used in this book to describe the syntax of initialization statements and macro instructions are:

• Any word or character shown in uppercase must be coded as it is shown.
• Any word or character shown in lowercase may be replaced by a value that you provide.
• When a vertical bar (|) separates items you may select one of the items unless the item description says you can select more. Do not code the vertical bar.
• When items are enclosed in braces ({}) you must select one of the enclosed items. Do not code the braces.
• When items are enclosed in brackets ([]) the enclosed items are optional. You may select none, some, or all of the items. Do not code the brackets.
• Default values are underlined.