This chapter describes the format for describing the files and symbols used in the syntax.
Chapter 2 and subsequent chapters use the following format for describing files:
The syntax is described by using the symbols and syntax elements shown in the following table.
Table 1-4 Symbols used in the syntax
Symbol | Convention |
---|---|
| | In syntax explanations, a vertical bar separates multiple items, and has the meaning of OR. For example: A|B|C means A, or B, or C. |
[ ] | In syntax explanations, square brackets indicate that the enclosed item or items are optional. For example: [A] means that you can specify A or nothing. [B|C] means that you can specify B, or C, or nothing. |
{ } | In syntax explanations, curly brackets indicate that only one of the enclosed items is to be selected. For example: {A|B|C} means only one of A, or B, or C. |
... | In syntax explanations, ... indicate that a description is omitted. ABC... means that there is a description after ABC, and this description is omitted. Alternatively, in syntax explanations, an ellipsis indicates that the immediately preceding item can be repeated as many times as necessary. For example: <Property>...means that you can specify as many properties as necessary. |
< > | In syntax explanations, angle brackets indicate a variable. For example: <Property> means that the user enters a property name or a property name is displayed. <File name> means that the user enters a file name. |
Table 1-5 Permitted characters used in the syntax
Type | Definition |
---|---|
Upper-case alphabetic characters | A to Z |
Lower-case alphabetic characters | a to z |
Alphabetic characters | A to Z, a to z |
Numeric characters | 0 to 9 |
Alphanumeric characters | A to Z, a to z, 0 to 9 |
Symbols | ! " # $ % & ' ( ) + , _ ![]() ![]() |
Note: Use single-byte characters for all the symbols.