Editing PL/I (section)

===Other mainframe and minicomputer compilers===
A number of vendors produced compilers to compete with IBM PL/I F or Optimizing compiler on mainframes and minicomputers in the 1970s. In the 1980s the target was usually the emerging ANSI-G subset.

* In 1974 [[Burroughs Corporation]] announced PL/I for the B6700 and B7700.<ref>Burroughs Corporation, ''B 6700/B 7700: PL/I Language Reference Manual,'' Reference 5001530, Detroit, 1977.</ref>
* [[UNIVAC]] released a UNIVAC PL/I,<ref>Sperry-Univac Computer Systems, ''Sperry-Univac 1100 Series PL/I Programmer Reference,'' Reference UP-8277, 1976.</ref> and in the 1970s also used a variant of PL/I, PL/I PLUS, for system programming.
* From 1978 [[Data General]] provided PL/I on its [[Data General Eclipse|Eclipse]] and [[Data General Eclipse|Eclipse MV]] platforms running the [[Data General AOS|AOS]], [[AOS/VS]] & [[AOS/VS II]] operating systems.<ref>Data General Corporation, ''AOS PL/I Reference Manual,'' Order No. 093-000204, c. 1978.</ref> A number of operating system utility programs were written in the language.
* Paul Abrahams of NYU's Courant Institute of Mathematical Sciences wrote CIMS PL/I in 1972 in PL/I, bootstrapping via PL/I F. It supported "about 70%" of PL/I compiling to the CDC 6600<ref>{{cite conference |last1=Abrahams |first1=Paul W. |title=The CIMS PL/I compiler |conference=1979 SIGPLAN symposium on Compiler construction |pages=107–116 |doi=10.1145/800229.806960 |isbn=0-89791-002-8 |doi-access=free}}</ref>
* [[Control Data Corporation|CDC]] delivered an optimizing subset PL/I compiler for Cyber 70, 170 and 6000 series.<ref>Control Data Corporation, ''PL/I Reference Manual,'' 1978, Publication No. 60388100A.</ref>
* Fujitsu delivered a PL/I compiler equivalent to the PL/I Optimizer.
* Stratus Technologies PL/I is an ANSI G implementation for the [[Stratus VOS|VOS]] operating system.<ref>{{cite book|title=OpenVOS PL/I Language Manual (R009)|publisher=[[Stratus Computer|Stratus Computer, Inc.]]|location=[[Marlboro, Massachusetts]]|year=1995|url=http://stratadoc.stratus.com/vos/19.0.0/r009-05/index.html?context=r009-05&file=ch1r009-05.html|at=OpenVOS PL/I}}</ref>
* [[IBM Series/1]] PL/I<ref name=S1PliIntro>{{cite book
 |title=IBM Series/1 PL/I Introduction Program Numbers 5719-PL1 5719-PL3 
 |id=GC34-0084-0
 |date=February 1977
 |edition=1st
 |url=http://bitsavers.org/pdf/ibm/series1/GC34-0084-0_PL_I_Introduction_Feb77.pdf
 |publisher=IBM
}}
</ref><ref>{{cite book
 |title=IBM Series/1 PL/I: Language Reference Manual
 |id=GC34-0085-0
 |publisher =IBM
}}
</ref> is an extended subset of ANSI Programming Language PL/I (ANSI X3.53-1976) for the IBM Series/1 Realtime Programming System.