XML Signature - slide "Recently on the list."

Simon: Require XSLT expressions to have the XSLT root node [Reagle's Prose Proposal]
LaMacchia: Remove X509 and other non-mandatory KeyInfo element types.
Reagle: Enumerated XML-Signature Conformance Requirements. Do we agree we formally define two things:
1. XML Signature element type.
2. XML Signature Application
Gregor Karlinger:
1. Removing SignatureProperties as they are superfluous.
2. Only a single Cert per X509Data.
Merlin: Proposal to make RetrievalMethod's encoding and type attributes optional.
Owen: DTD Structures (parameter entities make it easier to create derivative application DTDs but can't be used in the internal subset.)
Reagle: do PI style sheet declarations change the XML Instance's InfoSet? Should we move from SHOULD to MUST with respect to signing the content of stylesheet references?