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Introduction to administering Xprint V7.0 Xprint V7.0 architecture
5.2.1 The Xprint V7.0 objects
The following objects are defined in Xprint V7.0 (the parentheses contain the
short name of the Xprint V7.0 objects for use in Xprint V7.0 commands):
● Filters (-flt)
Filters have the function of converting the data sent to the printer by the user
into the format required by the printer. This makes it possible, for example,
to print normal ASCII files on PostScript printers as Xprint V7.0 is supplied
with the filter vppost.
Figure 11: Filters
Two types of filter are distinguished under Xprint V7.0:
Slow filters are executed before the actual spool process, i.e. after the job
is submitted but before it is printed. They convert data or allow special print
modes such as printing in columns or landscape mode.
Fast filters are used to enhance the print functionality provided by Xprint
V7.0. If used, they are the last link in the chain of Xprint V7.0 objects; they
edit the print job and are in direct contact with the printer. Their main function
is to provide a connection with objects other than the standard components.
They receive the feedback from the printer and forward it to the supervisor
in a form it can understand.
As an administrator you can define and compile, modify or delete your own
filters (fast and slow). For a description of how to define new filters see the
“Xprint V7.0 - Reference Manual”.