uuid types 3 and 5

[Martin Baxter]

Was looking at the uuid command.

Type 4 is straightforward enough.

Types 3 and 5 have me baffled though. Does anyone know what those types
are used for? I can't even guess, nor have my web searches led me to any
information about their usage.

I suppose if it isn't obvious to me then I probably have no need for
that and I shouldn't worry about it, but it's bugging me, that's all.

Martin Baxter