Scope of | in XML-spec

Dear madam, sir,

I am implementing the XML-standard based on the recommendation
REC-xml-19980210. While implementing, I found some rather confusing rules
like [12] and [75]. These rules all have the form:
A B C
| D E F

The scope of the |-operator is clearly over both lines i.e. the intended 
relation is technically speaking (A B C) | (D E F). Staying formal, the
relation expressed is A B (C | D) E F. Reading the standard, this last is
clearly not intended. I couldn't find a mentioning of the syntax used in
the standard. 

Maybe it is wise to correct this in a future version. I can only guess
that you used this notation from the viewpoint of readability. In that
case I suggest a note or a comment in section 6 to avoid confusion for
other implementors. 

Kind regards,

Roelant Ossewaarde
Max Planck Institute for Psycholinguistics
Nijmegen