SPIRIT	X/Open Common Applications Environment
Interface Categories:
Administrative	N/A
Application Programming Interface	(Programming Interface, XDCS)
Exchange Format	Data Interchange (Protocols and Formats, XDCS)
Human User Interface	User Interface
Internationalisation	Internationalisation
Language	Programming Languages
Management Services	Systems Management
Media	Data Interchange
Model	N/A
Protocol	Interworking (Protocols and Formats, XDCS)
Security Services	Security
System Integration Interface	(Programming Interface, XDCS)
Platform Services:
Operating System Services	Base Operating System
Management Services	Systems Management
Security Services	Security
Distributed Services	Interworking
Data Management Services	Data Management
Transaction Services	Distributed Transaction Processing
Presentation Services	User Interface
Communications Services	Interworking