Xerox FreeFlow manual VFU2, VFU3, Constant=Page, Constant=Job

PDL principles and procedures

Specifying VFUs The VFU (vertical format unit) command specifies the vertical tabbing for the print job. There can be more than one VFU identified. Each VFU command requires an identifier. All VFUs are typically specified at the beginning of the system level; for example:

/* System level commands*/

VFU1:	VFU	ASSIGN=(1,11), ASSIGN=(12,66),
		TOF=11, BOF=66;
VFU2:	VFU	ASSIGN=(1,(11,77)),
		ASSIGN=(12,(66,132)), TOF=11,
		BOF=132;
VFU3:	VFU	ASSIGN=(1,1), TOF=1, BOF=132;

Adding logical Logical processing commands are invoked when the system processing locates satisfactory test criteria. These test criteria are set up for

specifications record fields and, if met, allow special processing to take place for such things as banner pages, record selection or deletion, page selection from auxiliary paper trays, and page offsetting.

An example of logical processing tests and criteria is provided in this command set:

T1:	TABLE	CONSTANT=('PAGE 1');
T2:	TABLE	CONSTANT=('INPUT RECORDS');
T3	TABLE	CONSTANT=('JOB');
C1:	TABLE	CONSTANT=(122,6,EQ,T1),
		LINENUM=(1,10);
C2:	TABLE	CONSTANT=(14,13,EQ,T2);
C3:	TABLE	CONSTANT=(14,3,EQ,T3);

These commands are often placed at the system level because they require identifiers. However, depending on how many of the jobs they apply to within the JSL, they could be coded at any of the other levels.

Using LCDS Print Description Language 1-23