Erik,
> -----Original Message-----
> From: [mailto:] On
> Behalf Of Erik Rissanen
> Sent: Monday, December 19, 2011 11:08 AM
> To: Sinnema, Remon
> Cc:
> Subject: Re: [xacml] RE: Context Handler
>
> To add hierarchical actions or semantic entailment, you can provide this
> through a PIP in the architecture. Why would you need to change anything?
Semantic entailment can *not* be done through a PIP (see the email thread Paul and I exchanged on this subject), and I'm sure that there are other examples like that.
Thanks,
Ray