Руководство По Установке для Xerox 4215 MICR MRP

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OVERVIEW
Figure 1–3 shows a letter containing an overlay, page segment,
graphics block, and text.
Figure 1–3.
Sample letter layout elements
Graphics
Block
Overlay (image block and text)
Physical
page
Logical
page
Text
Page
Segment
Overlays 
Overlays are resources you can temporarily store in printer
memory.  Overlays can consist of any combination of text data,
image block data, graphics block data, or bar code data.  When
you define an overlay, it contains all printing instructions
including its position on the page and the typestyle to use.  It is
independent of the logical page environment. 
Letterheads and business forms are typical applications of
overlays.  You can merge variable data, such as the customer’s
name and address, with the overlay during printing and you can
include other overlays and page segments within an overlay.  You
can nest overlays, which means you can include several levels of
overlays within an overlay, depending on their size. 
1-6
XEROX MRP FAMILY INTELLIGENT PRINTER DATA STREAM (IPDS)
CONFIGURATION AND REFERENCE GUIDE