// tag::user-os[]
[.os-win]
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This site works great on Windows 10, and probably on Windows 7, and likely even on Windows XP.
Windows often requires extra/special instructions for developer-oriented stuff.

Windows users are encouraged to explore WSL2 for access to a true Unix-like system right inside their main OS.
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[.os-nix]
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This site was built on a Linux desktop, and it probably looks great on FreeBSD.
I personally want Mac and Windows users to know that, but other stuff might be noise to non-Linux users, so why rub their noses in it?
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[.os-mac]
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MacOS always makes AsciiDocsy look terrific.
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[.os-mac.os-nix]
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The author of AsciiDocsy strongly prefers Unix-like systems, but they would never want Windows users to see such a statement.
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// end::user-os[]