On 8 Jan 2024, at 9:17, Bret Busby wrote:

> But, apart from the functionality that I have not seen in any other operating 
> system, of using an extra file descriptor of version number, so the whole 
> filename would be something like
> <filename>.<extension>;<version number>
> (I am not sure whether that syntax is correct - I have not used VAX/VMS, for 
> about 35-40 years)
> retaining (from memory) up to the last seven versions of a file, really, why 
> bother?

It was also a feature (with slightly different syntax) of DEC's
TOPS-20, before VAX/VMS was released.  I don't recall what the
limit on retained versions was.

...
Niall


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