I’m surprised that sans, serif, monospace, etc., don’t fall back to using the best available system font on every browser/platform. There really shouldn’t be any need for a separate designation for that. We already have the fallback.
@aral i think this is defined per user agent. Back in the IE5 days, there was a tab in the settings that would let you choose fonts+sizes. And it should totaly default to the best available.
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