help on VMS wasn't a builtin. It was a system-provided program, with data files ... | Hacker News

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		PaulDavisThe1st on Sept 4, 2020 \| parent \| context \| favorite \| on: A Requiem for a Dying Operating System (1994) help on VMS wasn't a builtin. It was a system-provided program, with data files that could be accessed via other software.

JdeBP on Sept 4, 2020 [–]

The same was true on MS-DOS, DR-DOS, and OS/2. Microsoft provided a help file compiler with some of its DOS development tools, and IBM provided an INF/HLP compiler and (if memory serves correctly) a message file compiler with the OS/2 SDK (HELP using both hypertext help files and message files on OS/2).

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