Mackie manual Xprint V7.0 architecture

Introduction to administering Xprint V7.0 Xprint V7.0 architecture

5.2.1The 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”.

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