Xerox Printer User Manual

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PLANNING YOUR FORMS
If you decide to place marks along the edge of the physical page
(edge–marking) in your form, be familiar with the edge–marking
limitations.  To accommodate edge–marking, the system page
must be larger than the physical page.  Since the system page
boundaries correspond to at least two edges of the physical page
boundaries for all paper sizes, you can only use edge–marking on
the two edges of the physical page that do not correspond to
the system page. 
The product guide for each printer contains specific information
about edge–marking.
Physical page
CAUTION:  Unexpected results occur if you plan a form for a
physical page paper size that is not available. 
The physical page is the actual paper size.  On a Xerox LPS, you
define the default size of the physical page during system
generation (SYSGEN).  During planning, you must consider the
default paper size or other paper sizes available for your printer.
See the “Supported paper sizes” appendix for more information.
Virtual page
The virtual page is the area you specify for printing.  The virtual
page can be as large as the physical page (actual paper size), but
can never be larger than the physical page.  If you do not specify
the virtual page size, the defined (planned) area of the virtual
page is the same as the physical page.
Since the Xerox 4700 Color Document Printer has a limitation on
the print area of the physical page, make sure that the virtual
page does not include the area the printer grippers cover.  Refer
to your printer documentation for more information on print area
limitations.
Form origin
All form data described by HFDL is positioned on the page
relative to a point, called the form origin
.  The form origin is a
reference point from which you place all elements on a form
using HFDL commands. The form origin is a point that is offset
from the upper left corner of the virtual page.  You can specify
this point during form description.  If you do not define a virtual
page and specify a form origin, the default form origin is the
origin of the physical page. 
HOST FORMS DESCRIPTION LANGUAGE 3.2 FOR IBM MVS CREATING FORMS
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