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0 of Tandem's Open System Services API extends the company's capability to support robust open applications based on the X/Open Portability Guide Standards (XPG4).
Tandem's OSS is a standards-based operating system environment that complies closely with the specifications in the X/Open Portability Guide, Release 4 (XPG4), thus enabling easy development and porting of open applications to Tandem NonStop servers.