1. New Programming Language. IBM' s original (temporary) name for PL/I, changed due to conflict with england' s "National Physical Laboratory." MPL and MPPL were considered before settling on PL/I. Sammet 1969, p.542. 2. A ef="module.php?name=Lexikon&file=search&eid=1&query=functional language">functional language with ef="module.php?name=Lexikon&file=search&eid=1&query=pattern matching">pattern matching designed by Rod Burstall and John Darlington in 1977. The language allowed certain sets and logic constructs to appear on the right hand side of definitions, e.g. setofeven(X) <= <:x: x in X & even(x) :> The NPL ef="module.php?name=Lexikon&file=search&eid=1&query=interpreter">interpreter evaluates the list of ef="module.php?name=Lexikon&file=search&eid=1&query=generator">generators from left to right so conditions can mention any bound variables that occur to their left. These were known as {set comprehension}s. NPL eventually evolved into {Hope} but lost set comprehensions which were called ef="module.php?name=Lexikon&file=search&eid=1&query=list comprehension">list comprehensions in later functional languages. [John Darlington, "Program Transformation and Synthesis: Present Capabilities", Research Report No. 77/43, Dept. of Computing and Control, Imperial College of Science and Technology, London September 1977.] 3. NonProcedural Language. A ef="module.php?name=Lexikon&file=search&eid=1&query=relational database">relational database language developed by T.D. Truitt et al in 1980 for ef="module.php?name=Lexikon&file=search&eid=1&query=Apple II">Apple II and ef="module.php?name=Lexikon&file=search&eid=1&query=MS-DOS">MS-DOS. ["An Introduction to Nonprocedural Languages Using NPL", T.D. Truitt et al, McGraw-Hill 1983].

e="border-width:thin; border-color:#333333; border-style:dashed; padding:5px;" align="left">In addition suitable contents:
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