Suffix the file name with .idl. The same IDL file must be incorporated in the client and server UAPs.

(a) Identifier

Use the following characters for an identifier:

• Alphabetic characters (uppercase and lowercase)
• Numbers 0 to 9
• Underscore (_)

The first character must be an alphabetic character. Up to 31 characters can be used unless otherwise specified.

(b) Unusable term (keyword)

Some identifiers are reserved as keywords in IDL file coding. These keywords cannot be changed.

(c) Punctuation character

The following graphic characters can be used:

", ', (, ), *, ,, . /, :, ;, |, =, [, \, ], {, }

(d) Whitespace

The following characters are treated as whitespace:

• Spaces
• Line feeds
• Horizontal tabs
• Form feeds at the beginning of lines
• Comment lines
• Succession of one or more of the above whitespace characters

A whitespace is required at the following locations:

• Before a keyword, identifier, or number which is not prefixed with a punctuation character
• After a keyword, identifier, or number which is not suffixed with a punctuation character
• Before or/and after a punctuation character unless otherwise specified

A whitespace enclosed in double quotation marks (") or single quotation marks (') is treated as a character. Otherwise, whitespace is ignored because it is assumed as a delimiter of other punctuation elements.

(e) Comment

/* indicates the beginning and */ indicates the ending of a comment. Comments cannot be nested.

The following character styles are used in this manual for explaining the syntax of coding an IDL file:

abc: Non-italic characters indicate that coding is to be done as noted in the expression of the syntax explanations.

abc: Italic characters indicate that coding is to be done with special values assigned.

For assignment character strings, see the syntax explanations.

The following brackets are used in this manual for explaining the syntax of coding an IDL file:

[ ]: Non-italic brackets indicate that the item must be selected. When coding an item, [ ] is needed.

[ ]: Italic brackets indicate that the item can be omitted. When coding an item, do not include [ ].