Editing PL/I (section)

===DEC PL/I===
Perhaps the most commercially successful implementation aside from IBM's was Digital Equipment Corporation's VAX-11 PL/I, later known as VAX PL/I, then DEC PL/I. The implementation is "a strict superset of the ANSI X3.4-1981 PL/I General Purpose Subset and provides most of the features of the new ANSI X3.74-1987 PL/I General Purpose Subset", and was first released in 1980.<ref>{{cite web|url=https://bitsavers.org/pdf/dec/vax/lang/pl1/AE-J971B-TE_VAX-11_PLI_1.0_SPD_198010.pdf|title=VAX-11 PL/I, version 1.0|date=October 1980|publisher=Digital|access-date=2023-10-31}}</ref><ref>''Uniprise PL/I for UNIX Reference Manual,'' Uniprise Systems, Inc., Irvine, California, 1995, p. xxi.</ref> It originally used a compiler backend named the VAX Code Generator (VCG) created by a team led by [[Dave Cutler]].<ref>{{cite newsgroup|url=http://compgroups.net/comp.os.vms/re-dave-cutler-and-vms-2/514577|archive-url=https://web.archive.org/web/20210614015421/https://compgroups.net/comp.os.vms/re-dave-cutler-and-vms-2/514577|url-status=usurped|archive-date=June 14, 2021|title=RE: Dave Cutler and VMS #2|date=2004-05-21|author=Tom Linden|newsgroup=comp.os.vms|access-date=2021-02-26}}</ref> The front end was designed by Robert Freiburghouse, and was ported to [[VAX/VMS]] from [[Multics]].<ref>{{cite interview |last1=Cutler|first1=Dave|subject-link=Dave Cutler|interviewer=Grant Saviers|title=Dave Cutler Oral History|url=https://www.youtube.com/watch?v=29RkHH-psrY |archive-url=https://ghostarchive.org/varchive/youtube/20211211/29RkHH-psrY |archive-date=2021-12-11 |url-status=live|publisher=Computer History Museum|date=2016-02-25|website=youtube.com|access-date=2021-02-26}}{{cbignore}}</ref> It runs on VMS on [[VAX]] and [[DEC Alpha|Alpha]], and on [[Tru64]]. During the 1990s, Digital sold the compiler to [[UniPrise Systems]], who later sold it to a company named Kednos.<ref>{{cite newsgroup|url=https://comp.answers.narkive.com/t33zEl7i/pl-i-frequently-asked-questions-faq|title=PL/I Frequently Asked Questions (FAQ)|author=Robin Vowels|date=2010-04-01|newsgroup=comp.answers}}</ref> Kednos marketed the compiler as Kednos PL/I until October 2016 when the company ceased trading.<ref name="kednos">{{cite web|archive-url=https://web.archive.org/web/20210314190741/https://www.kednos.com/|archive-date=2021-03-14|url=https://www.kednos.com/|title=Kednos PL/I for OpenVMS and Tru64|date=2016-11-02|access-date=2021-03-30|website=kednos.com}}</ref>