> You can find the official license agreement here, pay close attention to
> section 1.2.

Sorry. There is no clipart license at the above link and there is no Section 1.2.

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However,
Recently a MSFT person stated on the Internet that MSFT clipart is free for any use. I wouldn't worry about it, myself. Clipart is by definition freely available.

But as my friend said above, remember that this is not legal advice.