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|   |  | 900 Series HP 3000 Computer Systems: MPE/iX Architected Interface Facility: Operating System Reference Manual > Chapter 1 Introduction   Who Uses Architected Interfaces? | 
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 The primary audience of the Architected Interface Facility is third-party developers outside of Hewlett-Packard. The secondary audience is Hewlett-Packard internal operating system, subsystem, and application developers. MPE/iX Architected Interface Facility products are available for purchase by any third party developer. | |||||||||||||||||||||||||||||||||||||||||||
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