[XeTeX] XeTeX, font protrusion, and the microtype package

[Philip TAYLOR]

Peter Dyballa wrote:
>
> Am 04.10.2012 um 10:06 schrieb Philip TAYLOR:
>
>> Could anyone please tell me the XeTeX primitives into which
>> the Microtype package hooks in order to enable font protrusion ?
>
>
> Could it be sufficient to read microtype.sty?

No, I had already done that before asking.

> You could also send a message to its author…

I could indeed; but this is a question about XeTeX, not about
Microtype.

Philip Taylor

(In general, answers that add nothing and are mere comment on
  the question are better not posted).