Should questions about a specific version of something have both the general tag of it and the version tag, or just the version tag? For example: If I'm asking "How do the Home and Professional versions of Windows XP differ?", do I tag it [[windows]]+[[windows-xp]], or just [[windows-xp]]?

What about regular questions about Windows, i.e. If I have a certain version of Windows, but my question isn't specifically about that version, for example: "I need sound editing software for Windows. I'm on Windows XP.". On Mac OSX: "I can't get printing working. I'm on OSX." Do I tag it [[mac]] and [[osx]], or just [[osx]]?


  [windows]: https://superuser.com/questions/tagged/windows
  [windows-xp]: https://superuser.com/questions/tagged/windows-xp
  [mac]: https://superuser.com/questions/tagged/mac
  [osx]: https://superuser.com/questions/tagged/osx