File-Description keywords may have no parameters, optional parameters,
or required parameters. The syntax for keywords is as follows:
Keyword(parameter1 : parameter2)
where:
Parameter(s) are enclosed in parentheses ( ).
Note:
Do not specify
parentheses if there are no parameters.
Colons (:) are used to separate multiple parameters.
The following notational conventions are used to show which parameters
are optional and which are required:
Braces { } indicate optional parameters or optional elements of parameters.
An ellipsis (...) indicates that the parameter can be repeated.
A colon (:) separates parameters and indicates that more than one may
be specified. All parameters separated by a colon are required unless they
are enclosed in braces.
A vertical bar (|) indicates that only one parameter may be specified
for the keyword.
A blank separating keyword parameters indicates that one or more of the
parameters may be specified.
Note:
Braces, ellipses, and vertical bars are not a part of
the keyword syntax and should not be entered into your source.