Xerox 701P21091 Command syntax conventions, Syntax conventions, Symbol Term Function, Output

PDL principles and procedures

NOTE: Commas and blanks cannot be used interchangeably. Many commands require commas to separate the parameters, and blanks are not valid delimiters. The syntax diagram in each command and parameter description shows which delimiters to use.

•Uppercase text: Use UPPERCASE letters when coding PDL commands. Comments, however, need not be in uppercase.

Command The following LINE command example contains three example parameters. The right part of the VFU parameter is a reference

to an identifier “VFU1.” The right part of the DATA parameter has two components that are value constants, and OVERPRINT uses keyword constants.

Table 1-3.

LINE

VFU=VFU1, DATA=(1,10), OVERPRINT=(PRINT,DISP);

Command syntax conventions

The command descriptions use the syntax conventions shown in the table below.

			Table 1-4. Syntax conventions
Symbol		Term	Function
(	)	Parentheses	Enclose options in a command right part that consist of two or more
			components, separated by commas.
{	}	Braces	Enclose a set of choices for a right part component, or the entire right
			part of a command for which there are two or more alternative
			(“either–or”) options, only one of which must be selected.
		Separator	Separates alternative command right part options, one of which must
			be selected. (Means “or.”)
[	]	Square	Enclose components that are optional and not required for the
		brackets	command.
,		Comma	Separates multiple parameters or components of a parameter right
			part (means “and”).
OUTPUT		Uppercase	Denote a keyword for a command, parameter, or option.
(example)		letters
value		Italics	Denote a variable you must define.
(example)

1-14 Using LCDS Print Description Language