Notes/additions/changes to eda28
 
1 Genre-specific classes like prose, verse, drama contain all
chunk-level <emph>or inter-level</emph> elements specific to that genre.
 
2 The sample definitions of seq have typos; they should read:
 
    <!ENTITY % seq '(%m.common; | %m.prose;)*' >
    <!ENTITY % seq '(%m.common; | %m.verse;)*' >
 
The definition of seq will have to be accomplished in the DTD file for
the specific genre; this suggests we need to have distinct files for
Swiss and Anarchist mixed-genre texts.  Not clear how to get definitions
of alternate-genre chunks included (e.g. for poems in the front matter,
or for that matter for poems embedded in the text).
 
The parameter entities gdiv and mixed should perhaps be renamed gen.seq
and mixed.seq.
 
3 The definitions of m.phrase and m.inter should be changed:  in
m.phrase, for '%m.hq;' read '%m.hqphrase;' and for '%m.ref; |
%m.milestone;' read '%m.loc;'.  In m.inter insert '%m.hqinter |' before
'%m.lists'.
 
    <!ENTITY % m.phrase '%x.phrase; | %m.hqphrase; | %m.data;
                        | %m.edit; | %m.ref; | %m.loc;
                        | %m.bibl; | %m.seg;'                   >
    <!ENTITY % m.inter  '%x.inter; %m.hqinter; | %m.lists;
                        | %m.notes;'                            >
 
4 Under Common Content Models we should also define a model for elements
which may contain either a sequence of chunks but may also contain only
a phrase or word, and whose definitions must thus make it possible for
them either to contain paragraphs, or to use the same content model as a
paragraph.  Examples:  item and note.  For such elements, I propose the
model
 
       '( ((%m.chunk;), (%m.chunk; | %m.inter;)*)
        | (%prose;) )'
 
This means in effect:  if you want to include chunks, e.g.
paragraphs, then you <emph>must</emph> begin with one.
 
Problems:
 
Even in verse texts, epigraphs etc. may end up needing prose paragraphs
etc.  How does this work?
 
I think we have a lot of things in chapter HD defined as %broth; -- I
think they should almost certainly be defined as %prose; not as
%phrase.seq -- otherwise we forbid even such things as quotation.