Why is the tag not allowed while the tag is allowed? While asking questions I noticed that I can tag but when its time for , you cannot tag Unix, why?


We have a tag but because the entire site is effectively about Unix this tag would get abused and become pointless. Therefore it's restricted to only historical aspects of Unix. There are a few Q&A's that use it (currently 9 Q's).

If you take a look at the info about the topic it explains its purpose and role:

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