ixml minutes 2022-12-13

https://www.w3.org/2022/12/13-ixml-minutes
Norm to issue an erratum for issue 147
Steven to propose a route forward on Issue #139 (URI/IRI grammar)
Steven to propose an iXML grammar for IRIs and illustrate the places where 
it might fail.
Steven to review Norm's pull request 167
MSM - open dynamic naming as a separate issue
Norm to produce a concrete proposal. John offers to assist [For issue 75 : 
Combining grammars]