#148 @ed should be provided by a class
The elements <cb/>, <lb/>, <milestone/> <pb/> and <refState/> all have a manually added @ed attribute. It seems to me that it would be simpler to provide this by membership in a class. The only reason for it not being provided as an attribute class that I can see is that their definitions are all slightly different. They are:
cb: "(edition) indicates the edition or version in which the column break is located at this point"
lb: "(edition) indicates the edition or version in which the line break is located at this point"
milestone: "(edition) indicates the edition or version to which the milestone applies."
pb: "(edition) indicates the edition or version in which the page break is located at this point"
refState: "(edition) indicates which edition or version the milestone applies to."
My point is that if @ed had a definition of "(edition) indicates the edition or version to which the element applies" (or similar) then I think it could be provided by a class and thus be much cleaner.
(note also that in their definitions, milestone/@ed and refState/@ed end with a full-stop and none of the other ones do...)
Just something I noticed and so submit for consideration.
-James
Implemented att.sourced class, at revision 5442