Technical data

1
Advanced Printing Software Overview
Advanced Printing Software is a flexible, distributed, client/server print
system for the Tru64 UNIX operating system. This print system includes
the following features:
• A set of client and server programs that work together to manage and
perform print-related functions.
• A set of tools for administrators and operators to manage printing in a
network environment.
• Utility programs for end users to print their documents and monitor
their print jobs.
The print system is based on the following industry printing standards:
• ISO/IEC 10175 — Document Printing Application (DPA)
The DPA standard defines a set of abstract print objects, their states,
syntax, protocol, and a comprehensive set of standard attributes.
• POSIX 1387.4 — System Administration – Part 4: Printing Interfaces
The POSIX document specifies a set of command operations and
arguments relating to printing and management of a print system.
1.1 Terminology
Understanding Advanced Printing Software concepts is beneficial for
simplifying the administration of the system. This section defines and
describes terms used in this manual.
1.1.1 Clients and Servers
Advanced Printing Software employs a client/server printing architecture.
The clients and servers use an interprocess communication mechanism
to exchange information. Clients send requests to the servers, and the
servers return responses to the clients. The print system software includes
several client programs that interface to the print system and provide server
programs that perform the operations requested by the client programs.
Advanced Printing Software Overview 1–1