[tei-council] another Roma idea

[Syd Bauman]

> elements, attributes, modules etc in ODD having an optional
> "immutable" flag, to indicate to Roma, and other ODD processors,
> that this thing is NOT subject to change. The effect in Roma would
> be that this creature would not be clickable for change. ... Useful
> for conformance.
> Who thinks this is a good way to go?

Again, general idea sounds very good. But how and where is this flag
stored? Does each <*Spec> element get a new attribute
  attribute mutable { tei.boolean }
?