Or is this correct "version N and prior"?
Mainly, I'm asking about this because in
version N and prior
I think that "versions" are implied by prior, hence one would read it as
version N and [versions] prior
while in the first example
versions N and prior
the usage of "versions" is incorrect since after this we have direct one version.
First example could be corrected to
versions: X and prior
however, without ":" it looks incorrect to me.
Thanks for your help.