Pro-tip: if you put Roman numerals in your product name, many people will say them as letters, not numbers.
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Wasn't that the official guidance for Mac OS X?
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Which way? Apple says "OS 10", but everyone else says "OS Ex".
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Replying to @nnethercote
OK, I misremembered. Found the Jobs keynote introducing Jaguar, and he called it "Mac O S Ten". youtube.com/watch?v=24jKGoA9…

Sep 13, 2017 · 4:58 AM UTC

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Replying to @davidbaron @nnethercote
I think I spent a bit of time looking at the official advice about how to *write* the name of the OS, and mostly ignored how to say it.