Xerox 721P85530 - Manual (Page 41)

PRINT DESCRIPTION LANGUAGE (PDL)
XEROX DOCUPRINT 180 LPS PDL REFERENCE 2-3
In addition, there are syntax rules you must use in order for the
system to recognize and process your JSLs. These rules are
described later in this section.
Figure 2-2. Example of PDL command components
In this example, the identifier, parameter keyword, and parameter
options are all part of the VFU command, which is represented by
VFU, the required command keyword. All of these components may
be collectively referred to as a command statement.
Identifier
If the command is to be referenced by another command, an
identifier must precede the command keyword.
The PDL command below has a command identifier (VFU1), a
command keyword (VFU), and three command parameters
(ASSIGN, TOF, BOF):
VFU1: VFU ASSIGN=(1,1),TOF=1,BOF=55;
END;
A command identifier is a label that may consist of one to six
alphanumeric characters (A-Z and 0-9). It must be followed by a
colon (:). The identifier VFU1 in the command above could be coded
with any number of blanks following the VFU1 characters, but can
have no blanks within the identifier name.
Note: The VFU1 identifier is referenced in the LINE command
(LINE VFU=VFU1) of tables 2-1 and 2-2. A command that requires
an identifier must always be defined prior to any reference to it.
Command keyword
A command keyword is required. For example, CME is the command
keyword in table 2-1 and VFU, TABLE, CRITERIA, CME, PDE, and
so on are the command keywords in table 2-2. A command keyword
is required for each PDL command statement. All command
keywords are listed in appendix A.