[XeTeX] How to tell Xetex don't embed some ttf font into pdf

[Arthur Reutenauer]

>                                                             The case where
> no system font is available would rarely happen — because if somebody
> expects to use a computer in a language, then fonts that support that
> language must be installed.

  My point exactly.  Thank you, Andrew.  The file might not be readable
everywhere, but it will be to those who care about reading it.  Apple
Preview, for example, has no problem rendering my file (although with a
poor choice of font).

	Arthur