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Language peer sets for CLEF:
United Kingdom
United Kingdom/1985
Designed 1985
1980s languages
Fifth generation
Late Cold War


alternate simple view
Country: United Kingdom
Designed 1985

for COBOL Language Enhancement Facility

extension system for COBOL to permit dialects to interoperate

Related languages
MCOBOL CLEF   Evolution of

  • Yow. (1979) Yow. J.F.S. The design and implementation of a COBOL compiler with a macro facility. M. Sc. Th., Computation Dept, Univ. Manchester Inst. of Science and Technology. Manchester, England, 1979.
  • Triance J.M. and Layzell, P.J. (1982) Triance J.M. and Layzell, P.J. "CLEF - A COBOL Language Enhancement Facility", Computation Dept. Report 273, University of Manchester Institute of Science and Technology, December 1982.
  • Layzell, P.Z. (1985) Layzell, P.Z. "The History of Macro-Processors in Programming Language Extensibility"
          in (1985) The Computer Journal 28(1) January 1985
  • Triance, JM and Layzell, PJ (1985) Triance, JM and Layzell, PJ "A language enhancement facility for COBOL - its design and implementation" pp128-133 Abstract Online copy
          in (1985) The Computer Journal 28(2) May 1985
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