IDL specification language
Encyclopedia
IDL is a software interface description language
Interface description language
An interface description language , or IDL for short, is a specification language used to describe a software component's interface...

 (also referred to as Interface Descriptor Language) created by William Wulf
William Wulf
William Allan Wulf is a computer scientist notable for his work in programming languages and compilers.Born in Chicago, Illinois, he attended the University of Illinois, receiving a BS in Engineering Physics and an MS in Electrical Engineering, then achieved the first Ph.D. in Computer Science...

 and John Nestor of Carnegie Mellon University
Carnegie Mellon University
Carnegie Mellon University is a private research university in Pittsburgh, Pennsylvania, United States....

 and David Lamb of Queen's University, Canada.

Like other interface description languages, IDL defined interfaces in a language- and machine- independent way, allowing the specification of interfaces between components written in different languages, and possibly executing on different machines using remote procedure calls.
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